Article 73 -‘Design: a discussion’ Part 4

Hi, welcome to Taiga Bonzai in this post we discuss Bunjin or Literati because, the old adage of ‘less is more’ comes into being due to the sparseness of foliage and presentation of this particular style.

Introduction – according to bonsai master John Y. Naka in his book ‘Bonsai Techniques’, “The Bunjin style of bonsai is so free that it seems to violate all the principles of bonsai form. The indefinite style has no specific form and is difficult to describe however, its confirmation is simple yet very expressive. Bunjin is the Japanese terminology for this particular style, which first appeared in China during the Song Dynasty (960-1279 A.D.)

Bunjin or Literati – specimens were predominantly conifers, but as time passed deciduous species began to appear for example. Flowering and fruiting varieties Magnolia, family Magnoliaceae and Bougainvillea, family Nyctaginaceae. The edible fig Ficus carica and crab apple Malus pumila are commonplace as is ficus ginseng Ficus retusa, silver or weeping birch Betula pendula; there is no rule to state which species can or cannot be used.

Bunjin are usually tall with slender trunks that can be shaped according to the artist’s interpretation or conception of the style, but it should be remembered that there are different classes for bonsai heights. Small bonsai Kenshitsubo 2.5 cm to 8 cm, Shito 5 cm to 10 cm, Shohin 5 cm to 15 cm and Mame 10 cm to 20 cm. Are in reality too small to be considered for Literati, because they cannot do justice to the style, although there may be differences of opinion on this consensus.

Komono 15 cm to 26 cm can be used, but foliage has to be minimal with thin trunks otherwise the tree will not look aesthetically correct; a balance has to be maintained because, the tree is the picture and the pot is the frame in which it sits. Other classes suitable for Bunjin are the medium size range including, Katade-Mochi 25 cm to 46 cm, Chumono-Chiu 40 cm to 90 cm, Omono-Dai 76 cm to 122 cm, Hachi-Uye 102 cm to 152 cm and Imperial the largest and most majestic of all Bonsai between 152 cm and 203 cm.

However, not every tree species is suited for Literati design for example, Horse chestnut, Aesculus hippocastanum and Norwegian maple Acer platanoides because of their leaf size. There is a consensus that by constant pruning leaf size can be reduced and there is truth in this logic, but can they be reduced enough to be considered for Literati design; probably not.

The image below is a Bunjin black pine Pinus thunbergii in the Chinese Collection on display at the National Bonsai & Penjing Museum in the United States National Arboretum; it was donated by Stanley Chinn. As the image shows the viewer’s eyes are first drawn to the pot relatively small, a round unglazed feminine container that suggests a delicate approach softening what can be deemed a masculine composition. The trunk’s movement twists and turns right, returning left where the apex with its drooping branches gives the sense of balance, which is simple yet expressive.

Image courtesy of Sage Ross

The next image depicts a Bungin Chinese Juniper Juniperus chinensis also housed at the United States National Bonsai & Penjing Museum, it has been given the Sharimiki treatment or ‘dead wood’ style of bonsai. This tree is planted in an unglazed round feminine container giving a delicate appearance. Sharimiki/Jin treatment suggest that the tree has befallen some catastrophe at some point giving the onlooker an appearance of age, although it is only 37 years old. Trunk movement slants right returning left near the upper part of the tree with the apex in direct line with the trunk’s base as it rises from the soil; foliage is compact giving the impression of a balanced composition.

Image courtesy of Carl Clifford

Designing deciduous Bunjin can result in problems due to their vigorous growth, mature trees are not as supple compared to coniferous, trunks can splinter or crack and branches are easily broken. Shaping is achieved by constant pruning and wiring, which can only be done after sap rising has concluded (end of spring depending on your particular zone) and then all wiring has to be monitored to avoid indentations in the bark. Scarred trunks and limbs render the tree redundant as a bonsai moreover, there are other points to be taken into consideration for example.

(a) Distance between the potential buds, (leaf nodes) if they are too far apart foliage will look open and sparse. (b) Leaf size, if the leaves are too big as with fronded (fern-like) types such as Jacaranda Jacaranda mimosifolia, Royal Poinciana Delonix regia, Honey Locust Gleditsia triacanthos and Mountain ash Sorbus sp. they will look out of context. The principle aim of Literati is ‘less is more’ meaning the foliage should be relatively compact and sufficient but not overbearing.

The final image is of a ‘Gumbo Limbo’ Almacigo Bursera Simaruba a deciduous species native to tropical regions of the Americas. The container a round unglazed feminine pot at first glance seems hardly sufficient to house such a large specimen, but this is what designer has opted for; which enhances the large bulbous lower trunk and it’s nebari. As the viewer’s eye line moves up the trunk we notice a slight kink to the right, above this point the trunk turns sharply to the left then back on itself with further movement to the apex. The lower branch is carefully shaped and positioned to fill the void at the first acute bend with the remainder of the foliage supporting the composition.

Image courtesy of Andy Kuz photo by candyjshirey

These three Literati/Bunjin examples are the result of what can be achieved from studying a specimen to ascertain what potential it holds for this type of style, which is quite unique in bonsai. Thus far we have discussed some of the classic designs found in the catalogue of bonsai styles and there are many more to consider, but at this juncture we will pause the discussion concluding with the controversial and infamous ‘Tanuki‘ design. Until next time, BW, Nik.

Article 72 – ‘Small but deadly’

Hi, welcome to Taiga Bonzai we have written much on pests and disease which cause problems for agriculture and horticultural communities worldwide, in this article we discuss a candidate that not only kills trees, but is able to create serious problems to humans and domestic animals.

Introduction – the ‘Maritime pine‘ or ‘cluster pinePinus pinaster is native to the Mediterranean basin covering a large area that includes, Portugal, Northern Spain, Southern and Western France, Western Italy, Croatia, Tunisia, Algeria and Northern Morocco. It is a hard, fast growing pine containing small seeds with large wings and favours this region’s climate of cool rainy winters and hot dry summers. Pinus pinaster is closely related to Pinus halepensis commonly known as the ‘Aleppo pine’, because both species share many of the same characteristics and pests.

Pinus halepensis also grows in the Mediterranean region in Malta, Montenegro, Albania and east to Greece, Syria, Lebanon, Southern Turkey, Palestine, Jordan and Israel. Both these species are subject to attack from Dioryctria sylvestrella, commonly known as the new Pine knot-horn‘ or ‘maritime pine borer‘ a member of the Pyralidae family, which occurs naturally in Europe, much of Asia and North Africa. This pest has been discovered as far north as the Arctic Circle but is more common at lower latitudes, where it does most damage.

Dioryctria sylvestrella moth and caterpillar courtesy of Frank Hecker – wikipedia

Dioryctria sylvestrella – is a small mottled brown and white insect with a wingspan of 28 to 35 mm, which flies in a single generation from June to October. The female chooses fast-growing, vigorous host trees on which to lay its eggs. The larvae attack buds, shoots, cones and young stems. Damaged tissue attacked by the rust fungus Endocronartium allow the larvae to enter the tissues and tunnel under the bark into the phloem. The larvae usually remain close to where they were hatched, but occasionally migrate to other parts of the tree.

Larvae pupate inside a mass of resin mixed with frass (shown below) which they produce and continue to feed within. Their boring activity causes large quantities of resin to flow from the wounds weakening the tree allowing fungi and other pathogens to gain entry eventually threatening the trees health. D. sylvestrella was first detected in the UK in 2001 and is different from the three other species in the genus by the fact that the subterminal line is generally smooth with a single waved kink at its midpoint, in the other three species this line is dentate from the mid-point to the dorsum.

Resin and frass of D. sylvestrella images courtesy of ‘Project Portugal’

Efforts to control – these species of pine are under threat, young trees have no defence and eventually succumb, older more mature trees are able to withstand the onslaught but are severely weakened. In Italy the powers that be have thought of several methods to control D. sylvestrella for example chemical usage however, horticulturists are against such practice their arguments are that there is little or no control and many claim that an effective chemical solution has yet to be found.

In addition, it is argued that a chemical approach would have serious consequences to the horticultural industry. Because if used its properties become airborne resulting in contamination of other crops including, olive, fruits and vegetable production rendering such unmarketable, hence loss of income not only to the horticulture fraternity, but also to the state. Moreover, no one in their right mind would consume contaminated food produce, because of the possible side effects if they are unsure of its origin, which is a stringent mandate of the EU.

Finding a solution – the agricultural sector meaning the farmers and growers are of the consensus that it is virtually impossible to prevent the onslaught of D. sylvestrella due to its abundance in the Mediterranean region and its ability to invade. However, studies on D. sylvestrella behaviour indicate that larvae when ready to metamorphosize are compelled to descend the tree and conceal themselves in the litter at the tree’s base. Therefore, preventing the larvae from doing so seems a logical solution in stemming the birth of the next generation of moths.

Traps have been manufactured that can encircle the trunk capturing the larvae as they descend, which are then disposed of. Although these traps are efficient they cost approximately 30 to 50€ each depending on the region, to some this may appear inexpensive; but in reality it is the opposite because much depends on the amount of trees one has on the land. Hence farmers and growers are designing and constructing their own versions as shown below.

Homemade larvae trap image courtesy of ‘Project Portugal’

This homemade version consists of plastic base and wall with a layer of foam affixed to the inner diameter to fit snugly against the contours of the trunk. A hole is drilled into the base where a tube protrudes downward to which a plastic bag containing tree litter is tied on. The larvae walk around the trap eventually falling down the tube into the bag, when the bag is full the larvae are disposed of. This homemade trap costs approximately 3€ to construct. It can be argued that sometimes even the most simplest of inventions are more effective than expensive chemical alternatives.

D. sylvestrella – is harmful to humans and domestic animals due to its ability to shed toxic hairs (called setae or spines) from its body, which it is apt to do when disturbed. According to James H. Diaz of the National Center for Biotechnology Information (NCBI) “caterpillars bear highly specialized external nettling or urticating hairs and breakaway spines or setae to defend against attacks by predators and enemies“. These “can inflict serious human injuries ranging from urticarial dermatitis and atopic asthma to osteochondritis, consumption coagulopathy, renal failure and intracerebral hemorrhage.”

There are approximately 12 families of lepidoptera worldwide that are able to inflict serious injuries to humans and D. sylvestrella a member of the Pyralidae family is one of them. Andrea Seldeslachts, Steve Peigneur, and Jan Tytgat in their paper published online 2020 May 30. ‘Caterpillar Venom: A Health Hazard of the 21st Century’ states that “Depending on the family and species involved, some toxins provoke local urticating dermatitis, a burning sensation, allergic reactions, respiratory system problems and/or ophthalmia nodosa, whereas others cause systemic effects, including hemorrhagic syndrome, acute kidney injury and/oral phalangeal periarthritis.

With domestic animals being inquisitive is their natural bent, prone to sniffing or licking, the effect of the toxic venom from the hairs (setae or spines) of D. sylvestrella has what only can be classed as a devastating tragic misfortune, in that there being no antibiotic treatment available at this juncture. These animals are at risk with the most vulnerable part being the snout a wet fur less surface around the nostrils of the nose called the rhinarium, if this is infected by venom the consequences are severe; hence contact with D. sylvestrella larvae should be avoided at all cost.

As we have stated pests and disease are a major problem in today’s world which have been highlighted through our recent articles ‘Bug apocalypse‘ and ‘Unseen enemies‘, not all can be attributed to mankind’s actions, but many can – we have a problem that needs our urgent attention; failure to address it will only lead to escalation. Until next time, BW, Nik.

Article 71 – ‘Design: a discussion’ Part 3

Hi, welcome to Taiga Bonzai in this article we discuss the complexities of design, it’s meaning and message what the designer or artist is attempting to impart with their perspective and to attempt to make sense of it all in a rational manner.

Introduction – in part 2 we stated that in bonsai there are no figurines, structures or independent rocks which is the correct interpretation of the guidelines of this art form nonetheless, rocks are used in bonsai if a tree is attached to them in some way or form. Styles describing trees planted on or over rock are referred to as Deshojo, but the relation between root and rock create different terminology for example. A tree with its roots wrapped around a rock where the rock is at the base of the trunk, with exposed roots descending into the soil, is called Sekijoju. A tree with its roots clinging to a rock is referred to as Ishizuke. (ishitsuki)

Sekijoju – ‘Root over rock’ – the rock is at the base of the trunk, with the roots exposed to varying degrees as they traverse the rock and then descend into the soil below. Ishizuke (ishitsuki) – ‘Root clinging to a rock’ – the roots of the tree grow in soil contained within the cracks and holes of the rock. The rock may serve as a simple container with the tree escaping the container and forming its own shape, or may show a closer relationship to the rock’s shape, growing close to the rock and following its contours. The images below illustrate the difference between the two styles.

Sekijoju – ‘Root over rock’ Ishizuke – ‘Root clinging to a rock’

Creating these styles can be time consuming especially with young plants because the root ball has insufficient length and therefore, cannot be trained in this fashion due to the lack of stability. One way to solve this problem is to plant the tree in a large deep container to allow the roots to develop in length, alternatively planting the tree in the ground for a few seasons is another option. Once the tree’s root system has grown to the desired length it can be pruned and attached to the proposed rock. Here is a link to a video on root over rock.

Neagari – exposed root – The roots of the tree are exposed as extensions of the trunk free from soil, these can extend as far as one-half to two-thirds the total tree height, the image below depicts a tree that has gone through this process. Every second growing season the plant was re-potted but was elevated each time by 1.5 cm exposing the root system that hardened off until the desired effect was achieved.

Sabamiki – split or hollow trunk – this style portrays the visual effect of a lightning strike or other severe and deep trunk damage, which has been weathered over time. It is applicable to deciduous species, conifers, and broadleaf evergreens. The hollowed trunk is usually chiseled out, making a hollow that can range in size from a shallow scar to nearly the full depth of the trunk.

Sabamiki Maple

Sharimiki – driftwood – this style portrays a tree with a significant part of its trunk bare of bark. In nature, trees in the sharimiki style are created by disease, physical damage to the trunk, weathering and age. At least one strip of live bark must connect the leaves and living branches to the root system to transport water and nutrients. The bared trunk areas give a strong impression of age regardless of the tree’s conformation, so driftwood bonsai often fall outside of the conventional styles in shape and foliage.

Sharimiki by Sage Ross

Thus far we have given a few examples on different designs and how effective in appearance they can be to the viewer, but much depends on personal perception and concept. Our next post article 72 focuses on a serious pest that is devastating the Mediterranean basin – a problem of serious concern, but we will return to the design discussion in article 73. Until next time, BW, Nik.

Article 70 – ‘Design: a discussion’ Part 2

Hi, welcome to Taiga Bonzai in this article we discuss the complexities of design, it’s meaning and message what the designer or artist is attempting to impart with their perspective and to attempt to make sense of it all in a rational manner.

Introduction – the term bonsai (bon ‘pot’ and sai ‘tree’) refers to the joining or marriage of the two components regardless of style be they single, twin or multiple trunked trees and/or forest plantations. There are no figurines, independent rocks or miniature structures, displays where such artifacts are used come under different categories. In Japan they are referred to as ‘Bonkei’ and ‘Saikei‘, but there is a distinct difference between the two ‘Bonkei‘ does not use ‘live’ material of any description whereas ‘Saikei‘ does. The Vietnamese version of ‘Saikei‘ miniature landscape is called ‘Hón Non Bộ‘. We will discuss the bonsai forest landscape first then move on to the other designs.

In bonsai Yose ue – Forest describes a planting of many trees, typically an odd number, the pot is shallow to emphasize the height of the trees, alternatively a flat slab of rock may be used. The trees are usually of the same species, with a variety of heights employed to add visual interest and to reflect the age differences encountered in mature forests. (For mixed-species plantings refer to the Japanese art of saikei) The aim is to portray a view into a forest with different perspective effects such as placing the smallest trees toward the rear to create depth.

If you are contemplating planting a forest you need to gather all the hardware materials before hand for example. The pot or flat slab of rock, wiring needed to anchor the plants, adhesives, wire mesh to create contours, moss, fertilizer pellets, drainage mats and correct soil medium. As for the design, a stroll in a forest with a camera will give you some idea, if this is not possible troll through the world-wide-web to get some inspiration; planning is vitally important to make the display work. (shown below)

A Trident Maple (Acer buergerianum) bonsai, North American Collection courtesy of Author Sage Ross

Bonkei – in Japan’s historical Shōsōin, housing seventh, eight and ninth century artifacts is an elaborate miniature tree display composed of a shallow wooden base, with carved wooden mountains and sand portraying a river and surrounding land. Small silver metal tree sculptures are placed in the sand to produce a table top design of a tree landscape. (shown below)

The earliest illustration of Penjing – Bonkei is found in the Qianling mausoleum murals at the Tang Dynasty tomb of Crown Prince Zhanghuai, dating to 706.

A ‘bonkei’ display is a temporary or permanent three-dimensional depiction of a landscape in miniature, portrayed using mainly dry materials for example. Wire, artificial plant making material, rock, papier-mâché, adhesives or cement mixtures and sand in a shallow tray as shown below.

Utagawa Yoshishige (1848)

‘Saikei’ is a Japanese art form derived from creating miniature landscapes and is quite similar to the Chinese art form of Penjing and Vietnamese Hòn Non Bộ wherein tray landscapes are made using soil, water and rocks on a single container or tray. The container is usually a large ceramic tray that has low edges and within are soil, rocks and pebbles arranged carefully to create a natural landscape. Some artists model their creations from actual landscapes such as a seaside, garden or mountain with living trees and forests. (shown below)

Saikei display courtesy of Wikipedia free encyclopedia

However, Saikei displays have become much larger and intricate through time and to give you some idea as to their creation, here are is a link where you can see Japanese master Masahiko Kimura creating one of his masterpieces. – 6:41 min.

Hón Non Bộ – is the Vietnamese version of Saikei and displays can be extremely large needing a small army to move them, but many table top varieties are in existence. Arguably Hón Non Bộ is the most sort after due to the Vietnamese attention to the finest detail, this is not to say that the Japanese version Saikei and the Chinese Penjing are not without the highest praise, after all it was the latter who were the first to create such works of art. Below are images of Hón Non Bộ.

Hón Non bộ

Are these designs a representation of reality or imagination what is conceived in the mind of the artist, there are many natural wonders in existence especially in the far east which entice designers to mimic for example, Vietnam’s islands and Phang Nga Bay, Thailand. Arguably it matters not from whence the inspiration came, because Penjing, BonkeiSaikei and Hón Non Bộ are marvels of design all having meaning and message. Until next time when we continue this discussion, BW, Nik.

Article 69 – ‘Design: a discussion’ Part 1

Hi, welcome to Taiga Bonzai in this article we discuss the complexities of design, it’s meaning and message what the designer or artist is attempting to impart with their perception and to attempt to make sense of it all in a rational manner.

Introduction – there are two basic principles in understanding design, (a) ‘perception‘ – the act or faculty of perceiving or apprehending by means of the senses or of the mind; cognition. (b) ‘concept ‘ – something conceived in the mind, a thought or notion to test or implement new ideas. These two factors are strongly connected because from what is perceived by the mind can be conceived in other ways or forms.

The arts – to explain the above statement we offer these examples. The Sistine Chapel ceiling (Soffitto della Cappella Sistina), painted by Michelangelo and other leading painters including Sandro Botticelli, Domenico Ghirlandaio and Pietro Perugino between 1508 and 1512; a cornerstone work of high renaissance art depicting the human form.

Michelangelo ‘The creation of Adam’

Other painters viewed art in different ways, English artist Laurence Stephen Lowry is famous for painting scenes of life in industrial districts often referred to as ‘matchstick men‘. Spanish painters Pablo Ruiz Picasso a post-impressionist (known as Cubism) and Salvador Domingo Felipe Jacinto Dalí i Domènech was attracted to Cubism, but moved closer to Surrealism in the late 1920s. American painter Paul Jackson Pollock a major figure in the abstract expressionist movement was widely noticed for his “drip technique” of pouring or splashing liquid household paint onto a horizontal surface, enabling him to view and paint his canvases from all angles.

Perception and concept has had an effect on other art forms, music like painting has undergone changes, classical, the blues of the deep south, big bands including Duke Ellington, Count Basie and Glenn Miller; the music of the swinging sixties to what is being touted today. Fashion, cuisine, architecture and other art forms have been affected by perception and concept through time.

Bonsai horticulture which began in 6th century China has also received its fair share of perception and concept. The first fictional work regarding bonsai ‘The Tale of the Hollow Tree‘, by Utsubo Monogatari originating in the year 970 states “A tree that is left growing in its natural state is a crude thing. It is only when it is kept close to human beings who fashion it with loving care that its shape and style acquire the ability to move one.”

But what is Monogatari saying, does it mean that we can change and fashion our trees into any shape or form as many modern bonsai designers are apt to do, where the designed specimen has little or no resemblance to its wild counterpart. According to American horticulturist John Yoshio Naka “Don’t turn your tree into a bonsai, turn your bonsai into a tree.” A tree that resembles its wild counterpart to some degree, the aim of bonsai is to mimic or copy what we see in nature but in miniature form; no doubt there will be many differences of opinion on this hypothesis.

The catalogue of styles – lists over 30 classic artistic representations with many quite common and others rare due to the complexity of design. We will discuss a few of these classic designs to shed light on what to some may be a little difficult to comprehend starting with the formal upright.

Chokkan – (formal upright) according to the guidelines as depicted by the old masters, the tree has a straight, upright, tapering trunk. Branches progress regularly from the thickest and broadest at the bottom to the finest and shortest at the top. This gives the branches a triangular shape and symmetry with none pointing directly toward the viewer, which is sought after for a formal upright style. There should be strong surface roots (nebari) visible, moving from the base of the trunk downward into the soil and radiating evenly around the trunk.

In looking at the image below the picture on the left an actual living Chokkan bonsai arguably does not conform to the guidelines, because the branches 1. 2. 3. and 4. protrude outside of the triangular shape and symmetry in addition, the foliage is rather overbearing. The composition of tree and pot can be construed as rather mundane, but this is how the designer perceives this specimen to be as a representation of what is found in nature.


In the right picture (same tree) the foliage has been reduced and conforms to the required triangular shape and symmetry. Sharimiki and Jin have been added to the trunk and apex respectively to give the viewer an indication that the tree has befallen some catastrophe at some point. It can be argued that the right hand picture would glean more interest than the left hand picture due to enhanced character, but it all depends on personal design preference; be it acceptable or not.

Fukinagashi – Wind swept – this style describes a tree that appears to be affected by strong winds blowing continuously from one direction, as might shape a tree on a mountain ridge or on an exposed shoreline. The windswept characteristic can be applied to a number of the basic styles, including informal upright, slanting, and semi-cascade, multi-tree bonsai can also be developed with elements of the windswept style.

The image below is of a 10 metre plus conifer growing on the shoreline of a lake in Ontario Canada, the left hand picture depicts it’s current design shape and symmetry due to element onslaught. We know that this tree although leaning to the left will not topple over, because it’s root spread will cover an extensive area and thus stability is ensured. Looking at the right hand branch it appears that there is very little foliage if any and can be deemed surplus to requirements.

If this tree were in miniature form changes could be made for example, the right hand branch has been shortened and Sharimiki has been applied to distract the viewer’s attention away from the straightness of the main trunk, which could be reshaped if needed. The lower branches have been removed, others pruned, these could be wired into shape to create a more compact look. Such simple changes have arguably improved the tree’s overall symmetry and composition keeping it within the wind-swept style. This is only one concept of design and although some might agree with this viewpoint others will differ.

We understand the viewpoints of Utsubo Monogatari and John Yoshio Naka because both have valid argument, but it is you the designer who makes the ultimate decision. In the next discussion on this subject we look at more classic designs, one of them being Penjing landscapes the Vietnamese Hón non bó and Japanese Bonkei versions. Until next time, BW, Nik.

Article 68 – ‘Finding the front’

Hi, welcome to Taiga Bonzai, in this article we answer a recently posted question of how to determine the front of a tree.

Introduction – all bonsai material regardless of the species (conifer or deciduous) will have certain characteristics that allow you to decide which is the front and which is the back. The signs that allow such determination are: 1. the Nebari or root system, 2. trunk and its movement, 3. branch configuration 4. the tree’s overall style and/or potential; we are referring to trees that have some maturity a minimum of 4 to 5 years old – not saplings, which lack such characteristics.

This Cotoneaster Lucidus now 19 years old – rescued from a garden centre’s waste bin in 2003 had no potential whatsoever, to solve the problem it was decided that the focus of attention should be aimed at developing the nebari. Every two years the plant was re-potted but was elevated each time by 1.5 cm exposing the root system that hardened off until the desired effect was achieved. The left branch was trained in a horizontal position and the right branch out and down to balance the composition, then finally placed in a shallow ceramic container.

Arguably the greatest teacher is nature itself, a walk through a woodland, forest, bog, swamp or mountainous terrain will reveal a wealth of information for example. Exposed roots systems, gnarled and twisted trunks and branches that have suffered severe weather patterns and this is what we try to imitate. However, when removing plants from the wild one has to be careful, permission has to be granted from the land owner; there are three posts on ‘Selecting material for bonsai’ part 1, April 15 2016 – part 2, April 23 2016 and part 3, August 06 2017.

Nebari – this Fukien tea Carmona retusa reveals it’s 5 root system in a ‘claw’ like manner allowing the viewer to see through it, left hand and front roots are dominant giving the impression of strength and stability, the root on the right although smaller balances out the above two roots whilst the two roots at the rear are in support. If we had of shown this tree in reverse the whole perspective of strength and stability would have been lost. Of course there are cases where this can not be achieved especially if there is no prominent root system, one then has to rely on the trunk and its movement for inspiration.

Fukien Tea Carmona retusa

Trunk and movement – staying with this Fukien tea for the moment – as the image shows there are acute turns in the trunk both left and right starting from the base to the apex, hence there is much movement and one might argue that such movement is rather excessive. Moreover, the foliage is masking the middle and upper portions of the trunk, but in our defense we are not the designer/s of this specimen, it came into our possession in 2013 as an import probably from Asia; where in that part of the world bonsai growers tend to be a tad more zealous in their approach to design.

Branch configuration – all trees regardless of the species have either dense or open foliage for example, Betula pendula commonly known as the ‘Silver’ or ‘weeping birch’ has open foliage and branches that droop down, Picea glauca has dense foliage often detrimental to the tree’s health as the inner branches are deprived of sunlight; hence they wither and die. According to the bonsai guidelines a bonsai should in all intents and purposes resemble its wild counterpart, branches should be evenly spaced from the base to the apex where they will be more abundant. As we have stated nature itself is the best teacher Autumn/spring is a good time to view trees as their branch placement is easier to see. Below is a hand-drawn image to give you some idea of the guidelines.

Branch placement

Seasonal change – the Northern hemisphere at this juncture is in the depths of winter, hence collection is virtually impossible for obvious reasons; in temperate zones seasonal change does occur but it is generally gradual. Of course there are instances where adverse weather patterns can have dramatic effects for example, a cold front with record-level snowfall caused major problems in most parts of the Attica region of Greece – Wednesday 17th February 2021.

Venturing into the interior – in August 2017 we obtained this Ginkgo biloba also known as the maidenhair tree, it is the only living species in the order Ginkgoales, which first appeared over 290 million years ago. The leaves are unique among seed plants, being fan-shaped with two veins radiating out into the leaf blade instead of a central vein that is found on other plants.

Ginkgo biloba before and after work

The left image depicts the tree after purchase, the right image shows the tree in summer 2021 the question is how did we arrive at the final design as the tree had no potential. Venturing into the interior to discover trunk movement and branch placement, measurements were taken to mark the lengths of each section, then duplicated on paper. Having discovered the tree’s potential the design was formed, foliage and branches were pruned – the lower branch on the right was jinned; the tree’s nebari is visible and will develop over time.

As stated the right image shows the tree in early summer, we could have pruned it back but decided not to, it was time to give the tree a break from the shears. We hope this article will give you some idea of how find the front of your tree specimens and should you require more information then the book Taiga Bonzai ‘Simplifying the Art’ is available. Until next time, BW, Nik.

Article 67 – ‘Pursuing the vision not the money’

Hi, welcome to Taiga Bonzai in this post we share our perception meaning the organization, identification, interpretation of information in order to represent and understand the presented information or environment and present it in a professional manner. 

Introduction – this article is for those who constantly send messages to Taiga Bonzai (T.B.) with comments including “Great site with innovated, interesting and educative articles on many topics, but I see that you don’t make money, let me show you how” and “why don’t you go on YouTube you can make money there.” There are reasons why we do not partake in such ventures, these will be explained and although we will probably be criticised for our point of view, we appreciate your concern and the interest shown.

The vision – T.B. pays a higher annual subscription for the privilege of preventing companies regardless of their intentions be they fair or foul from advertising on our site. We have been in operation since February 2016 – an on-going project filled with unique and engaging content unravelling the complexities associated with the world’s ‘oldest living art form’ via simplification.

The articles are educative informative discussions covering the many aspects of bonsai horticulture, read by our followers world-wide whom we invite to share views and ask questions, which many have entered into; we also engage in topics that are of a major concern including pests and disease.

Advertising – is a form of selling where communication is intended to persuade an audience or individual to purchase products or services regardless of whether they need them or not. Of course advertising if implemented in a professional manner does have its uses as vendors need to inform the public of their products, but it increasingly invades public spaces and in many cases is a constant annoyance.

For example if the vendor’s message fails to create interest they change strategy adopting different tactics including, unsolicited commercial email and other forms of spam that have become so widespread they are a major irritant to internet users and a financial burden on internet service providers.

YouTube – is an audio visual channel where countless people portray their various activities for example, homesteading, mechanics, restoration, culinary, bonsai horticulture and much more. The tools used, drones, various cameras, microphones and editing platforms have greatly improved over the years, but although are less expensive than broadcast equipment they are inferior unable to take the abuse they are put through. This evidence is borne by the people whom use said equipment that are constantly having to replace it due to misuse.

Arguably some of the footage aired is acceptable, but much of it is indifferent; it is what it is a ‘home video’ lacking in structure, content, context and directive failing to captivate the audience. However, we do not condemn this practise far from it, good luck to those who use YouTube as a platform to boost ratings gain sponsorship and if financial incentives are the reward then so be it.

T.B. – owns broadcast film equipment readily available should it be needed and as a professional filmmaker the old adage of ‘quality not quantity’ still remains our watchword, a perspective applied to all that is undertaken regardless of its genre. But as the pundits persist in saying “YouTube video presentations do not have to be broadcast standard” which, is a ludicrous and morally unacceptable statement; “If a task is worth doing, do it well or leave it alone“, you have all heard that phrase at sometime in your lives.

Bonsai horticultural practises are abundant on YouTube covering a number of topics including, seminars, workshops and demonstrations, but in the main the quality leaves much to be desired. To add to this a new approach has to be devised, one that has structure, content, context, meaning and message as governed by the laws of film language and its narrative structure, which the vast majority of YouTube presentations fail to adhere to. Professional filmmaking takes time to complete from the initial concept to the finished presentation.

Another important factor to consider is once one starts a YouTube channel, one has to continuously work at it on a regular basis to maintain a following and although some succeed in their endeavours, many fail. Moreover, the content has to of a moral standard according to YouTube guidelines whatever they are and failure to follow the rules can result in unwanted consequences.

For the foreseeable future Taiga Bonzai will remain in its current status – a platform continuing to write educative articles for our followers. Perhaps were are missing out by not chasing the filthy lucre, but do we want to go down the road of no return, not at this juncture – we prefer to pursue the vision not the money. Until next time BW; Nik.

‘filthy lucre’

Nota bene: In the last article 66 Unseen enemies update’ we gave reasons why restrictions were imposed due to unprecedented message problems, this has now ceased henceforth restrictions are now removed. However, should the onslaught reappear they will be reinstated; if you wish to contact us our email address can be found in the ‘about’ section at the top of the article.

Article 66 – ‘Unseen enemies update’

Hi, welcome to Taiga Bonzai in this post we share some of the comments we have received regarding article 56 ‘Bug apocalypse’ and this series ‘Unseen enemies’.

Introduction – the viewpoints of our readers are many and varied with all having concerns on the ever increasing problem of pests and disease that are threatening our very existence. But to discuss them all at length would make this article far too long therefore, we will take a small selection 10 in total in reverse order and we thank all whom have commented on our articles. In addition, there were also questions that will be answered at the end.

  • 10. Amy Hardcastle – “I had heard of the problem with declining insect populations but I did not realise the situation was so severe, I do now! Thank you.”
  • 9. Leon Sanchez – “Your post unseen enemies 4 re: ‘Portugal confirmed its first case in 2019 on lavender’ certainly shows the severity of the problem with the deadly disease Xylella fastidiosa, congrats.”
  • 8. Gillian P. Simmonds – “Taiga bonzai certainly knows how to get people’s attention on topics that most fail to understand, we do have problems and I do agree they need to be addressed, please keep writing.”
  • 7. Jonas Olsson – “Great work, you have given the powers that be a strong clear message will they listen! I sincerely hope they do otherwise we will be in serious trouble.”
  • 6. Lilian Gough – “Many bloggers write good work but yours is on another level, your work is artistic informative and a pleasure to read if only there were more like you.”
  • 5. Heinz Muller – “Bug apocalypse and unseen enemies really drive the message home here’s hoping the bureaucrats take note, very good articles.”
  • 4. Andrew Billings – “Talent is a hard to find in these days especially on subjects such as yours – you are able to get the message across, enjoyable reading, I look forward to more.”
  • 3. Galen Jonak – “It’s hard to come by well-informed people on this topic, however, you seem like you know what you’re talking about! Thanks”
  • 2. Taren Vanlier – “May I simply say what a relief to uncover a person that really understands what they are talking about on the internet. You actually know how to bring an issue to light and make it important. A lot more people really need to check this out and understand this side of the story. I can’t believe you’re not more popular given that you certainly possess the gift.”
  • 1. Dalton Beitz – “I’m amazed, I must say. Seldom do I come across a blog that’s both educative and entertaining, and without a doubt, you have hit the nail on the head. The issue is an issue that not enough men and women are speaking intelligently about. I am very happy that I stumbled across this in my search for something concerning this.”

The questions – there were many on pests and disease for example, how to eradicate them and by what methods, the protection of forests and woodland, tighter restrictions on importation, new phytosanitary regulations and will there be any detriment to bonsai horticulture.

1. Eradicating pests and disease – “What methods of eradicating pests and disease are currently in use and what is the success rate?”

For aeons agriculturists and horticulturists around the globe have been trying to halt the onslaught of pest and diseases that have devastated crops, forests and woodland. Many of these unwanted entities have arrived either by wind (pathogens) and wing (Insecta) and through packaging in more recent times. To date over 1 million species of insects have been discovered and described, but it is estimated that approximately 10 million exist on earth. For plant pathogens there are over 100 for every tree species. (60,065 in total)

Many we know of and are able to eradicate via insecticide and fungicide, but many chemicals are no longer effective and/or are not available for general public use for obvious reasons. Pesticides widely used include Cypermethrin, Glyphosate, Lambda Cyhalothrin, Chlorpyriphos, Cypermethrin Acetamiprid and Profenos Cypermethrin. However, insecta can become immune for example, the cotton bollworm Helicoverpa armigera has documented resistance to 49 pesticides. Pathogens are able to mutate and many are not affected by fungicide sprays and in some cases there is no chemical cure; hence the success rate is minimal to say the least. Science has to find solutions that are safe not just for humans but also the environment.

2. Woodland and forest protection – “What methods or practises are in place to protect forests and woodland?”

Practically all foresters are knowledgeable regarding the health and status of their plants and are able to detect problems quite quickly when symptoms appear. However, there are diseases that attack tree root and water conducting systems for which the signs are not visible until it is too late for example, Armillaria and Xylella fastidiosa. Anthracnose and Fire blight are visible as they attack foliage and small branches, infected trees by the above die within a short space of time, hence they are normally removed and burnt to avoid further contamination.

Aftermath of Xylella fastidiosa

Borers are perhaps the most harmful to trees, Asian Longhorned beetle Anoplophora glabripennis (China and Korea), Bronze Birch borer Agrilus anxius (United States), Emerald Ash borer Agrilus planipennis (China), Sirex woodwasp Sirex noctilio (Worldwide) and Dutch Elm Disease DED (UK). Evidence of their existence are particles of wood dust at the base of the trunk the result of tunneling into the tree’s cortex where eggs are laid and eradicating them is extremely difficult. 

3. Tighter restrictions on importation – “You have brought to awareness through your articles the problems with pest and disease control, will tightening the rules further reduce the problem?”

The World Trade Organization (WTO formed on January 1st 1995 with 164 members) is an intergovernmental organization that regulates and facilitates international trade between nations. Governments use the organization to establish, revise and enforce the rules that govern international trade. However, there are 14 countries who are not members including, Aruba, Eritrea, Kiribati, Kosovo, Marshall Islands, Micronesia, Monaco, Nauru, North Korea, Palau, the Palestinian Territories, San Marino, Sint Maarten and Tuvalu.

Therefore, it is extremely difficult to enforce rules and regulations further if there is stiff opposition, because trade rules for agriculture remain an extremely sensitive issue. This is particularly the case when agricultural imports carry the threat of disease. Nonetheless, under the rules of the WTO member countries are allowed to restrict the importation of agricultural products from diseased regions should potential risks be apparent.

4. New phytosanitary regulations – “What do these new rules entail and can they be enforced?”

Every country on the planet is a sovereign nation and has the supreme right to make or change laws as it so desires regardless of what treaties or agreements are in place. However, the nations in the EU block have to abide by the rules laid down by the commission, but the UK has parted company with the block and has no obligation to adhere to any mandate. The latter passed new phytosanitary regulations in January 2021 due to diseases that are now rife in Europe, any country wishing to trade with the UK has to abide these new measures. Such mandates are regulatory in other nations including Australia, North America, Canada and Russia.

5. A detriment to bonsai horticulture – “Will these new restrictions have an effect on the bonsai fraternity?”

We are researching and monitoring new laws and what we can divulge is the from the 1st January 2022 according to the UK’s Department for Environment Food and Rural Affairs

“All plants, plant products and other objects categorised as either ‘regulated and notifiable’ or ‘regulated’ must be accompanied by a Phytosanitary Certificate – All plants, plant products and other objects categorised as ‘regulated’ will require pre-notification, but only if instructed to do so upon submitting a customs import declaration.”

Since leaving the EU, importing goods from the UK has and is an arduous affair with more paperwork and additional import duty costs and these new regulations now in situ just exacerbate the issue. Meaning purchasing bonsai products from the UK will not be impossible, but extremely tedious and time consuming. No doubt the EU will probably reciprocate due to their petty minded bureaucracy because of the UK’s actions. However, there are many bonsai outlets on mainland Europe and other countries where the restrictions although in force are less rigid.

We wrote article 56 ‘Bug apocalypse’ because we were asked to do so, ‘Unseen enemies’ was a follow on because the two are connected. It was felt that these issues not high on governments agenda needed to brought to the public awareness due to the severity of the current situation, which if not addressed will spiral out of control.

Turning to another issue that is of great concern to us, is the vast amount of comments we have received on one post in particular article 50 – ‘Used, Abused and Unloved’. In the previous 2 days the total exceeded over 1,000 and today (Saturday 8th January) another 480 were lodged, this colossal amount on one article is unprecedented; hence investigation is in progress.

The comments themselves were not malicious in any shape or form quite the opposite and many required a response, but dealing with them is time consuming therefore, rules have been tightened in the hope that the onslaught will decrease. For example, (a) Comment author must fill out name and e-mail and (b) Users must be registered and logged in to comment. T.B. is not in favour of imposing restrictions we want our site to be available to all, but for the moment necessity compels. Until next time, BW, Nik.  

Article 65 – ‘Unseen enemies’ Part 4

Hi, welcome to Taiga Bonzai in this post the final one in this series we look at the points of view of others whom have various opinions on how to tackle the ever increasing problem of pests and disease; a major threat to our very existence. But whatever course of action deemed necessary taken either by individuals, communities and/or sovereign nations, there will always be stiff opposition and the threat of sanctions of one description or another due to bureaucracy and petty mindedness.

Introduction – thus far we have highlighted the many factors responsible for the present situation that we as humans now face all of which are of our own making. The financial cost of it all to date has been phenomenal and will continue to ensue rising exponentially where sustainability, (meeting our own needs without compromising the ability of future generations to meet their own needs) will not be possible; bringing us to the point of no return. We now view some of the directives of nations whom are attempting to arrest the situation from their own perspective.

United Nations FAO -at a conference in Rome 3rd April 2019 Bukar Tijani assistant director general for the Food and Agriculture Organisation of the United Nations (FAO) Consumer Protection Department stated that. “With increased trade and travel, the risks of plant pests spreading into new areas across borders is now higher than ever before. Each day we witness a shocking number of threats to the well-being of our plants and by extension to our health, environment and economy.”

FAO estimates that annually between 20 to 40 percent of global crop production is lost to pests. Each year plant diseases cost the global economy around $220 billion and invasive insects around $70 billion. “Many farmers and governments grapple with warding off highly destructive pests and diseases that are – on top of everything else – also new to them. The International Plant Protection Convention IPPC provides them with the tools and knowledge to keep their plants healthy and prevent pests from jumping borders.” added Tijani.

New IPPC standards adopted – 1. fumigation methods, this is in response to growing concerns over fumigants that can be harmful to human health and the environment. The standard sets requirements for temperature, duration, fumigants and quantity to make fumigation effective and puts forward solutions to lessen fumigations environmental impact by using recapture technology to reduce gas emissions. 2. Diagnostics protocols that describe procedures and methods for the official diagnosis of six pests, including the oriental fruit fly Bactrocera dorsalis and Xylella fastidiosa ensuring a correct diagnosis is essential to catalyze rapid actions to manage the pests.

B. dorsalis has affected trees such as avocado, banana, guava and mango in at least 65 countries. In Africa, import trade bans due to oriental fruit fly infestations cause annual losses of around $2 billion. Xylella fastidiosa is a deadly bacteria that attacks economically important crops such as olive, citrus, plum trees and grapevines. Since 2015, it’s been rapidly spreading from the Americas to Europe and Asia. Once the disease infiltrates a plant, it is there to stay, it starves the plant of water until the plant dies or becomes too weak to grow fruit. X. fastidiosa costs $104 million per year in wine losses in California and in Italy the bacteria has led to the decline of 180,000 hectares of olive groves destroying many centuries-old trees; a loss of €390 million over three years. X. fastidiosa constitutes a threat not only to Italy but to all the Mediterranean region’s economy.

X. fastidiosa is not known to be in the UK however, there have been outbreaks of the disease in mainland Europe in France, Italy and Spain. Portugal confirmed its first case in 2019 on lavender hence, the UK Government is concerned about how to prevent the disease being accidentally brought into the country on imported plants. In 2020 Lord Framlingham a Conservative peer asked the Government what the UK’s regulations are regarding X. fastidiosa.

UK regulations – were to introduce measures to strengthen the protection of plants from certain pests and diseases, including Xylella. They were made under article 52 of the EU Plant Health Regulation allowing the UK to take additional temporary national measures if they inform the European Commission and put forward a technical case to request EU measures against a specific pest, but those measures have not or will not be introduced in time to mitigate the risk concerned.

Moreover, the UK Government has argued that current EU emergency measures on Xylella do not address risks highlighted in the UK’s pest risk analysis on the disease. In particular, it is not clear if or when the EU emergency measures will be reviewed to address these risks and ensure a greater degree of assurance of disease freedom, in relation to plants of those species being moved in the EU and introduced from third countries. As such, there remains an unacceptable level of pest risk and this instrument introduces national measures under article 52, in the absence of EU requirements.

The European Commission’s response – in a decision on 4 June 2020, the European Commission said that it informed the UK the new national measures “that go beyond the existing requirements, are not supported by most recent scientific justification and are disproportionate.” It stated that the UK “should amend the UK Official Controls Regulations of 2019, by removing the amendments concerning Xylella fastidiosa and Ceratocystis platani which were made to those regulations by the UK Official Controls Regulations of 2020.”

On 19 June 2020, Department for Environment, Food and Rural Affairs (Defra) stated that the UK disagreed with the European Commission’s conclusions and that it was disappointed that “the opportunity has not been taken to extend the UK measures across the EU, providing enhanced protections for the EU’s member states.” Defra argued “that the biosecurity threat regarding the pests had not changed and the rationale for introducing stronger requirements remained.”

The department said it continued to encourage stakeholders and industry to “employ risk management practices which maintain the robust protection and assurance that the Defra regulations provide.” Defra also stated that The Animal and Plant Health Agency and the devolved administrations will continue to carry out intensive inspections of imported plants, taking account of risk factors such as origin, presence of insect vectors and suspect symptoms. “We will keep the need for any further actions under review in light of the ongoing risk situation, including developments in the EU and the results of our own surveillance.”

The Royal Horticulture Society (RHS) is also in agreement, plant health is increasingly under threat. Climate change and human activities have altered ecosystems, reducing biodiversity and creating new niches where pests and diseases can thrive. At the same time, international travel and trade has tripled in volume in the last decade and can quickly spread pests and diseases around the world causing great damage to horticulture, crops and the environment. New statutory controls on importing plants and plant products into the UK to safeguard plant health. “Meaning that plant material entering the UK will require a phytosanitary certificate (PC); the EU plant passport is no longer valid in the UK.” 

The U.S. DEPARTMENT OF AGRICULTURE – (USDA) state that world trade has significantly increased over the years to meet the growing demand and at this moment in time (December 2021) America is the only country to import more than it exports. USDA researchers Michael Livingston, Craig Osteen and Donna Roberts argue “That this increase in agricultural imports raise the risk of inadvertently introducing foreign pests and diseases.” which has been proven to be the case. For example, the emerald ash borer and Asian longhorned beetle introduced in the 1990’s are creating serious damage to trees in the Northeast and Great Lakes States.

More recently Ralstonia solanacearum, a bacterial pathogen that damages potatoes, eggplant, tomatoes and other horticultural products was detected on greenhouse geraniums imported from Kenya and Guatemala. “The cost of foreign pests and diseases can also include the temporary loss of export markets, such as when Japan, Korea and other countries suspended imports of U.S. beef when bovine spongiform encephalopathy (BSE) was detected in an imported cow in December 2003.” Studies by the National Plant Board, the Government Accountability Office, the Office of Technology Assessment and others report that foreign pests and diseases cause billions of dollars of economic losses to U.S. agriculture each year, while also adversely affecting ecosystem values and services.

These cost estimates include sizable public expenditures, including emergency funding to address new pest or disease threats and outbreaks. Today, 21 Federal agencies are responsible for some aspect of managing foreign pests and diseases in the United States. USDA’s Animal and Plant Health Inspection Service (APHIS) has by far, the leading role accounting for about $9 out of every $10 that the Federal Government spends annually on prevention and control of foreign pests and diseases. Annual expenditures for APHIS programs ranged from $1.1 to $1.5 billion between 2003 and 2007 including, emergency expenditures for programs such as increased BSE surveillance in 2004-06 and the introduction of import bans.

In evaluating such bans, economists try to measure the benefits of imports against the management production market and/or resource costs that might be associated with an outbreak of a disease or pest. Studies show that this varies on a case-by-case basis. Import bans have reduced total welfare in some cases, because the cost of disease establishment was out weighed by the consumer benefits from imports. For example, APHIS estimated that the annual net benefits of replacing a long standing ban on imports of Mexican avocados with more targeted phytosanitary measures totaled about $70 million, providing analysis support for USDA’s decision to grant Mexico full access to the U.S. market in 2007.

A recent study by an ERS economist, which examined options for policies to reduce the risk of entry of the Mediterranean fruit fly (medfly), illustrates how economic analysis can inform public decision making. The medfly is a serious pest for many fruit and vegetable crops and is known to exist in 65 foreign countries. (hereafter referred to as quarantine countries) APHIS allows imports of fresh produce from these countries only if they have been treated to eliminate medfly larvae. Currently, eight treatments are approved for the medfly. One of the most widely used is cold treatment, under which produce imported for fresh consumption must be refrigerated according to specific schedules (temperature-duration combinations) before allowed entry into U.S. markets.

Australian viewpoint – pests and diseases are a significant social, economic and environmental burden for Australia. They can affect primary production productivity; access to export markets, public health and
amenity; conservation of biodiversity and the natural and built environments to our individual and collective detriment. These effects can reveal themselves through increased costs of production, loss of or restrictions to export trade, reduced tourism, loss of biodiversity, greater public health costs and reduced public amenity.

Some introduced pests and diseases such as pest animals (rabbits, foxes, carp), weeds (blackberry, mimosa), animal diseases (Johne’s disease) and plant pests (potato cyst nematode) have become established over time in Australia with no prospect of eradication. Some of these pests and diseases may have economic, environmental or social impacts of national significance. Consequently, a nationally coordinated approach may be required. Given the shared responsibilities for their management among stakeholder groups, the effective management of nationally significant threats requires clarity of policy direction, priority, roles and responsibilities.

Governments at the national, state and territory levels; industry and individual landholders have invested jointly and individually in pest and disease management over many decades. These investments have been made across the biosecurity continuum onshore, at the border and offshore. Managing biosecurity is critical to a sustainable and productive agricultural sector and healthy environment. It protects our farmers and our environment from the impacts of serious pests and diseases that can significantly increase the costs of production and market access, domestically and internationally and affect our native flora and fauna. Effective management of established pests and diseases also assists Australia to meet its obligations with respect to international trade.

Under the Coalition of Australian Governments Intergovernmental Agreement on Biosecurity signed in 2012, Australian governments are progressing reforms to strengthen the national biosecurity system. The objective is to deliver more effective and more sustainable biosecurity outcomes for governments, industry and the broader community. One focus of this agreement is to establish a national framework for managing established pests and diseases of national significance. Consistent with emerging policy across numerous portfolio areas, there are opportunities to:

  • move away from government enforcement as a primary means of managing the impacts of established pests and diseases
  • adopt approaches in which the nature and magnitude of investment is determined by the extent and balance of public and private benefits
  • focus public investments on strategic functions including addressing market failure
  • promote more collaborative working arrangements between government and those stakeholders directly affected by established pests and diseases rather than have stakeholder groups acting in isolation.”

World Trade Organisation (WTO) – Kamal Saggi and Mark Wu in their World Trade Review Volume 16 Issue 2nd April 2017, pp. 279 – 302, state “Global exports of agricultural goods exceeded $1.7 trillion in 2014, with food accounting for over 80% of the total value.” “Such cross-border movement of food and agricultural goods helps ensure the sustenance and economic well-being of billions around the world. Yet, trade rules for agriculture remain an extremely sensitive issue. This is particularly the case when agricultural imports carry the threat of disease.”

Not surprisingly then, under the rules of the World Trade Organization member countries are allowed to restrict the importation of agricultural products from diseased regions. However, if governments could do so without limitation then this freedom could quickly devolve into a protectionist excuse that has the potential to seriously thwart trade liberalisation in the agricultural sector.”

Saggi and Wu argue that relevant WTO rules therefore, “must seek to balance two competing objectives providing sufficient flexibility for sovereign governments to regulate imports from diseased regions,” while simultaneously culling out protectionist measures for which the threat of diseased imports simply serves as an excuse for keeping imports at bay. “Getting this balance right is tricky, in 1994, Uruguay Round negotiators drafted the Agreement on Sanitary and Phytosanitary Measures (SPS Agreement) to spell out in detail the requirements that a WTO member must follow when seeking to ban or restrict imports of agricultural goods.”

Summary – our journey began with the dawn of time mentioning microbes and bacteria, arrival of plant life, dinosaur era, the early hominins and their eventual adaptation to community life and trade. To say that as a species we have evolved through a ‘life-long’ learning curve into a civilised society in reality is a misnomer, one only has to look at history and the present day shenanigans to substantiate this fact.

We know that every country has its own endemic pest and disease problems, some have invaded other lands by wind and wing a natural phenomenon and also by the hand of man resulting in consequences on a catastrophic scale, which we have little chance of eradicating. Because (a) we cannot see the problem until it is too late and (b) we lack the technical knowledge of how to arrest the situation. Yes there are many chemical solutions that can be used, but not all are effective especially with the many of pests and diseases we have mentioned in these articles. Moreover, these chemicals are not only dangerous to human health they eek into the soil killing microbes, earthworms, nematodes and other much needed creatures.

It can be agreed that commerce is an important factor in the modern world, but our attention to detail has been lackadaisical to say the least. Countless goods have been exported in infested packaging worldwide – the pests and disease have escaped multiplying in their millions ravaging agriculture and forestry. Many nations are now spending billions to eradicate pests and disease and the cost is escalating, whilst poorer under developed countries whose national GDP is practically non-existent suffer in silence and starve.

As stated at the beginning “whatever course of action deemed necessary taken either by individuals, communities and/or sovereign nations, there will always be stiff opposition and the threat of sanctions of one description or another.” Yet nations continue to blame each other instead of looking closer to home, it is imperative that we find common ground to seek solutions to curb the never ending invasion of pests and disease world-wide, failure to do so will result in devastating consequences.

As a species we rely heavíly on an array of factors vital to our very existence including technology, transport, housing, energy, education, medicine, clean water, forestry and agriculture for our immediate needs. If these are not protected then we face the inevitable – a world of devastation, dire water scarcity, where famine and pestilence rampage amok. Is this a world we want our children’s children and their descendants to inherit?

Image courtesy of Thanh Nien News

It is nearly 2 years since covid 19 reared its ugly head – many countries are now in phase 4 and a new variant Omicron has emerged, over 5 million lives have been lost due to ignorance and official incompetency and the figures are climbing. In reality, nations government’s handling of C19 has been a blatant scandalous failure moreover, diseases including Smallpox, Tuberculosis, Syphilis and Chlamydia, Scarlet Fever, Measles, Mumps, Whooping Cough and Legionnaires disease once eradicated are now returning in many parts of the world.

We wrote this series of articles to highlight the problems man has created and battled with for aeons, a predicament that is now escalating unprecedentedly. If the powers that be are inept in controlling C19 when scientific knowledge is available, how can they solve this issue where idiosyncrasy and bureaucratic meddling will undoubtedly ensue; the popular myth (although untrue) “Nero fiddles while Rome burns” is appropriate here. American author Samuel Langhorne Clemens (Mark Twain) stated that “Fiction is obliged to stick to possibilities – Fact is not.” These articles are not fictional tales of realism, they are reality. Until next time, BW, Nik.

Article 64 – ‘Unseen enemies’ Part 3

Hi, and welcome to Taiga Bonzai, in this post we continue our journey bringing to light the catastrophic failures of mankind’s idiosyncratic actions.

Introduction – according to the Botanical Gardens Conservation International (BGCI) and its network of 500 member organisations, there are 60,065 species of trees in the world, many are rare and threatened with extinction. If we multiplied the number of tree species with the number of known pests and disease all with different triggers, the statistics would not only be bewildering but also incomprehensible. Here we highlight more increasing problems the world has to face beginning with a few examples of the many deadly diseases for which at this juncture there is little or no control.

DiseaseArmillaria Root – according to Guido Schnabel of the Clemson University School of Agricultural, Forest and Environmental Sciences, “Armillaria root rot caused by the fungus Armillaria tabescens wreaks havoc on rootstocks, killing young and old peach and cherry trees before spreading to neighbouring trees.” “Between 1987 and 1992 Armillaria root rot caused an estimated $3.86 million to the peach industry and between 2000 and 2002, more than $1.5 million in damage to the Georgia peach industry.”

The first symptoms of an Armillaria infection are chlorotic leaves, stunted growth and sudden collapse of shoots, an obvious sign that infection is there is due to the presence of clusters of mushrooms around the base of an infected plant. Fungi sprouting from an A. mellea infection are honey-coloured to dark brown and have a domed cap. “Depending on species, the mushrooms may or may not have an annulus around the stalk or caps that are more disc-shaped.”

Armillaria mellea

This devastating disease can be caused by other Armillaria species as well, A. mellea is the primary pathogen in northern states causing premature peach tree decline, with the potential for significant annual losses. In Michigan, the predominant fungus is A. ostoyoe found in tart cherry orchards, unfortunately there is no ‘silver bullet’ solution to protect trees and Armillaria infections have taken many prime orchard sites out of production causing a huge loss of revenue.

Anthracnose – high on the list of devastation is widespread and considered an important disease in most countries. It is caused by a group of fungi in the genus Colletotrichum, that attacks leaves, twigs, flowers and fruits of a great number of tree and shrubs.

Anthracnose disease

Apple scab is a common disease of apple and crabapple tree varieties, as well as Mountain ash Sorbus and pear. It is caused by a fungus Venturia inaequalis that infects leaves and fruit, leaving the latter unsuitable for eating. Leaf spots are olive green at first, later turning dark brown to black. Infected fruit turns colour in a similar fashion, ending up brown, corky and deformed.

Apple Scab disease

Thousand canker disease – affects many plants including walnuts Juglans sp. It is mainly found in the Western United States however, black walnuts trees in Tennessee were found to be infected in the summer of 2020. It is vectored by walnut twig beetles Pityophthorus juglandis and forms small cankers around their galleries. As time progresses these small cankers coalesce to girdle branches and stems and trees can be infected for years before symptoms become visible for example, foliage in the upper branches of declining trees wilt and become yellow. Once a tree begins to decline it is often dead within a few years and at present there are no chemical management solutions to control the disease.

Walnut twig Beetle

Thus far we have given examples (albeit in brief) of the devastation caused by some of the many thousands of insects and disease, adding more examples would probably substantiate the argument further, but this task has already been accomplished. In the book ‘Taiga Bonzai – Simplifying The art’ (Revised Edition), 2 chapters reveal extensive information on these subjects, c.13 concentrates on ‘Pest and Disease’ and c.14 discusses ‘Toxicity’ nevertheless, we will return to this topic in part 4.

We now turn our attention to plants needed for our survival namely fruit and vegetables starting with one of the world’s oldest fruits the humble apple, the bureaucracy over production, the controversy surrounding it and the diseases that attack various species of this particular fruit.

The appleMalus domestica, its ancestor Malus sieversii originated in Central Asia 4 thousand years ago. Today there are 7,500 apple varieties throughout the world – 2,500 of which are grown in the United States. In the 2019/2020 crop year, China was the leading producer of apples its production amounted to 41 million metric tons, the European Union came in second place with approximately 11.48 million metric tons.

The UK has been producing apples since the Roman occupation (AD 43 to AD 410) however, production is now in serious decline due to bureaucracy and trade problems with the EU, hence growers are given payments to burn their orchards. Natural England and the National Trust claimed 60% of England’s orchards had disappeared since the 1950s and have launched a £500,000 project aimed at halting the decline. The crisis has been even worse in some areas such as Devon, which has lost almost 90% of its orchards. According to David Bullock, the head of nature conservation at the National Trust, “Traditional orchards have been disappearing at an alarming rate. We are in real danger of losing these unique habitats.” ( April 2009)

The orchard – Apples trees need space to grow, dwarf varieties require a minimum of 5m, standard trees need a distance of 9 to 11m. But this distance is inadequate because, as the trees mature they spread out, thus the risk of cross contamination from bacterium and fungal spores increases. In 2017 the total area harvested in the world for apples was 4,933,841 hectares. But, apples are not the only fruit produced, other varieties include apricot, pear, peach, plum and damson, hence the land mass required increases – these varieties predominantly cultivars are also susceptible to attack, thus the orchard becomes the playground for disease.

Such diseases include: Fire Blight a contagious disease affecting apples, pears, and some other members of the family Rosaceae. It is a serious concern to apple and pear producers and is believed to be indigenous to North America, from where it spread world-wide. Powdery mildew Podosphaera leucotricha a fungus that forms a dense white fungal growth (mycelium) on the host tissue affecting leaves, buds and shoots. Black Rot and FrogEye Leaf Spot Botryosphaeria obtusa attack fruit, leaves and bark of apple trees, Phytophthora Rot a soil-borne fungal disease by the pathogen Phytophthora sojae causes seed rot and attacks roots and stems; trees infected by such pathogens are usually destroyed.

However, there are apple tree varieties that are said to be disease resistant for example, Liberty, Freedom, Dorsett Golden, Enterprise, Goldrush, Pristine, Arkansas Black and Williams Pride which are American cultivars. European apple trees include, Topaz, Herefordshire Russet and Otava, but can the claims of being disease resistant to all insects and pathogens be substantiated – in short the answer is probably not. But arguably much depends on a particular climate zone; arid, humid, wet and cold. Moreover, these zones harbour other pests for example, the Round headed apple tree borer, European red mites, Red banded and oblique banded leaf rollers, Rosy aphids, Woolly aphids, Green fruit worms, Leafhoppers and Japanese beetles.

Horticultural methods – Generally speaking there are two schools of thought when growing crops either by conventional methods or organic. Conventionally grown is an agriculture term referring to a method of growing edible plants such as fruit and vegetables. This method of cultivation often use fertilizers and pesticides which allow for higher yield, out of season growth, greater resistance, longevity and greater mass. It is opposite to organic growing methods which attempt to produce crops without the use of synthetic chemicals (fertilizers, pesticides, antibiotics, hormones) or genetically modified organisms. (GMO)

Organic versus Conventional – people have very strong opinions on which method of horticulture is better, some advocate a preference for organic because it is healthier, tastes better and growers refrain from using pesticides. But there are negatives to this approach, fruit and vegetable yields will suffer due to the inevitable onslaught of pests and disease during the growing season for example. Many insects attack Brassica species the most common are diamondback moth Plutella xylostella also called cabbage moth, tobacco cutworm, aphids and many others. Hence more is planted to compensate for the loss and although organically grown food is preferable and more beneficial to consumers because it does not contain chemicals; it is more expensive.

Conventionally grown (GMO) – uses seeds that have been genetically modified to grow plants that have a faster growth rate, higher yields, are said to be pest and disease resistant and are cheaper to buy nonetheless, there are negatives to this approach. The use of synthetic pesticides and fertilizers on fruit and vegetables may eradicate many known pests and disease, but also kills insects that are beneficial for example, the lady bird beetle Coccinellidae a predator extremely proficient in eradicating aphids and scale colonies.

Additional problems arise because conventional horticulture often results in the soil being malnourished moreover, over spraying of pesticides can lead to greater resistance creating ‘super pests’ that cannot be eradicated. This will eventually lead to the development of stronger pesticides causing serious side effects in those whom consume the product.

Other nations Nilaparvata lugens the brown plant hopper (BPH), is a planthopper species that feeds on rice plants Oryza sativa L. These insects are among the most serious pests of rice a major staple crop for more than half the world’s population. They damage rice directly through feeding and also by transmitting two viruses, rice ragged stunt virus and rice grassy stunt virus. Up to 60% yield loss is common in rice cultivars attacked by this insect. BPH is found throughout Australia, Bangladesh, Bhutan, Burma (Myanmar), Cambodia, China, Fiji, India, Indonesia, Japan, North and South Korea, Laos, Malaysia, India, Nepal, Pakistan, Papua New Guinea, Philippines, Sri Lanka, Taiwan, Thailand, and Vietnam. 

Nilaparvata lugens

The brown plant hopper is dimorphic and can be either ‘macropterous’ (long wings) or ‘brachypterous’ (short wings) forms. The macropterous forms are migrants and invade new fields/paddies, adults usually mate on the day of emergence, and the females start laying eggs from the day following mating. Brachypterous females lay 300 to 350 eggs, whereas macropterous females lay fewer eggs; the eggs hatch in about six to nine days.

In Asia, India has the largest area for rice cultivation occupying 29.4 % of the global area, but has the lowest yield. The conventional paddy growing practices are in crisis due to social, biological and technical setbacks, yet there is a growing demand for rice due to ever burgeoning population. Rice demand in 2010 was estimated to be 100 million tonnes and this would increase by 50% in 2025 to assure food security in the world’s rice-consuming countries. However, with water becoming scarce many fields are drying out and coupled with increasing infestations of Nilaparvata lugens causing yield loss, it will difficult to fulfil the demand.

The cotton bollworm Helicoverpa armigera is a major pest of cotton Gossypium spp. maize, Zea mays, pulses, Fabaceae tomatoes, Solanum lycopersicum and sorghum bicolor throughout most of the world, but has only recently arrived in the Americas where it is rapidly spreading. It has documented resistance to 49 pesticides and is one of the most polyphagous and cosmopolitan pest species. 

Helicoverpa armigera

This species of Lepidoptera is found in Asia, Australia, New Zealand, Europe, Africa and South America. The adults emerge from the soil in the first 3 weeks of May and 2-6 days later and oviposition begins; a period lasting between 5-24 days. Within this time frame, a female may lay up to 3180 eggs up to 457 in 24 hours singly and mainly at night on various crops. Including, chickpeas, cotton, maize, okras, tobacco, tomatoes; when temperatures rise to 25°C, the eggs will hatch in 3 days and larvae immediately begin crop infestation and devastation. When fully fed, the larvae descend to the soil after 1-7 days pupate in an earthen cell 2-8 cm below the surface.

Pesticides – of which there are many used to control Helicoverpa armigera including, Lambda Cyhalothrin, Chlorpyriphos, Cypermethrin Acetamiprid and Profenos Cypermethrin, but as stated previously this pest has documented resistance to 49 pesticides. Moreover, as these articles thus far have pointed out many pests and disease cannot be eradicated.

In 2020 global pesticide usage was estimated to increase from 2 million tonnes to 3.5 million tonnes with China being the main user 1,763,000 tons followed by America 407,779 tons, Brazil 377,176 tons and Argentina 196,009 tons. One may argue that pesticides are beneficial for crop production, but extensive use of pesticides can possess serious consequences because of their bio-magnification and persistent nature.

Diverse pesticides directly or indirectly pollute air, water, soil and overall ecosystem which cause serious health hazards for living beings, one only has to look at the tens of thousands of lawsuits filed against Monsanto (now part of Bayer) over their chemical ‘Roundup’. In the final article of this series part 4 we look at the arguments in the attempt to halt the global invasion of pests and disease; until next time, BW, Nik.