BONSAI - Trees and Plants.
- Bonsai is the art of aesthetic miniaturization of trees by growing them in containers. Cultivation includes techniques for shaping, watering, and repotting in various styles of containers.
- Originating in China during the Han Dynasty, 'bonsai' is a Japanese pronunciation of the Chinese word penzai. The word bonsai has been used in the West as an umbrella term for all miniature trees.
- In Japanese, bonsai can be literally translated as 'tray planting' but since originating in Asia, so many centuries ago - it has developed into a whole new form. To begin with, the tree and the pot form a single harmonious unit where the shape, texture and colour of one, compliments the other.
Then the tree must be shaped.
- It is not enough just to plant a tree in a pot and allow nature to take its course - the result would look nothing like a tree and would look very short-lived. Every branch and twig of a bonsai is shaped or eliminated until the chosen image is achieved. From then on, the image is maintained and improved by a constant regime of pruning and trimming.
- It is the art of dwarfing trees or plants and developing them into an aesthetically appealing shape by growing, pruning and training them in containers according to prescribed techniques.
---------------------------------------------------------
Then the tree must be shaped.
- It is not enough just to plant a tree in a pot and allow nature to take its course - the result would look nothing like a tree and would look very short-lived. Every branch and twig of a bonsai is shaped or eliminated until the chosen image is achieved. From then on, the image is maintained and improved by a constant regime of pruning and trimming.
- It is the art of dwarfing trees or plants and developing them into an aesthetically appealing shape by growing, pruning and training them in containers according to prescribed techniques.
---------------------------------------------------------
CULTIVATION
- Bonsai are not genetically dwarfed plants. They can be created from nearly any tree or shrub species and remain small through pot confinement and crown or root pruning. Some specific species are more sought after for use as bonsai material because they have characteristics that make them appropriate for the smaller design arrangements of bonsai.
Techniques:
- The small size of the tree and the dwarfing of foliage result from pruning of both the leaves and the roots. Most trees require a dormancy period and do not grow roots or leaves at that time. Improper pruning can weaken or kill trees.
Copper or aluminium wire wrapped around branches and trunks holds the branches in place until they lignify (convert into wood), usually 6-9 months or one growing season. Some species do not lignify strongly, or are already too stiff/brittle to be shaped and are not conducive to wiring, in which case shaping is accomplished primarily through pruning.
Cultivators use deadwood features called jin and shari to simulate age and maturity in a bonsai. Jin is the term used when the bark from an entire branch is removed to create the impression of a snag of deadwood. Shari denotes stripping bark from areas of the trunk to simulate natural scarring from a broken limb or lightning strike.
Copper or aluminium wire wrapped around branches and trunks holds the branches in place until they lignify (convert into wood), usually 6-9 months or one growing season. Some species do not lignify strongly, or are already too stiff/brittle to be shaped and are not conducive to wiring, in which case shaping is accomplished primarily through pruning.
Cultivators use deadwood features called jin and shari to simulate age and maturity in a bonsai. Jin is the term used when the bark from an entire branch is removed to create the impression of a snag of deadwood. Shari denotes stripping bark from areas of the trunk to simulate natural scarring from a broken limb or lightning strike.
Watering:
- With limited space in a bonsai pot, regular attention is needed to ensure the tree is correctly watered. Sun, heat and wind exposure can dry bonsai trees to the point of drought in a short period of time. While some species can handle periods of relative dryness, others require near-constant moisture. Watering too frequently, or allowing the soil to remain soggy, promotes fungal infections and root rot.
- Free draining soil is used to prevent waterlogging. Deciduous trees are more at risk of dehydration and will wilt as the soil dries out. Evergreen trees, which tend to cope with dry conditions better, do not display signs of the problem until after damage has occurred.
- Free draining soil is used to prevent waterlogging. Deciduous trees are more at risk of dehydration and will wilt as the soil dries out. Evergreen trees, which tend to cope with dry conditions better, do not display signs of the problem until after damage has occurred.
Repotting:
- Bonsai are repotted and root-pruned at intervals dictated by the vigour and age of each tree. In the case of deciduous trees, this is done as the tree is leaving its dormant period, generally around springtime. Bonsai are often repotted while in development, and less often as they become more mature. This prevents them from becoming pot-bound and encourages the growth of new feeder roots, allowing the tree to absorb moisture more efficiently.
- Pre-bonsai material are often placed in "growing boxes" which are made from scraps of fenceboard or wood slats. These large boxes allow the roots to grow more freely and increase the vigor of the tree. The second stage, after using a grow box, has been to replant the tree in a "training box;" this is often smaller and helps to create a smaller dense root mass which can be more easily moved into a final presentation pot.
- Pre-bonsai material are often placed in "growing boxes" which are made from scraps of fenceboard or wood slats. These large boxes allow the roots to grow more freely and increase the vigor of the tree. The second stage, after using a grow box, has been to replant the tree in a "training box;" this is often smaller and helps to create a smaller dense root mass which can be more easily moved into a final presentation pot.
Wiring:
- Most bonsai are trained using malleable wire made from copper or copper colored aluminium. This is wrapped around the developing branches and trunk, allowing them to be moved into the desired shape and held in place by the wire. The tree is wired for at least one growing season to allow the branches to set in their new position. Some trees do not respond well to wiring and are shaped instead by pruning.
Tools:
- Special tools are available for the maintenance of bonsai. The most common tool is the concave cutter, a tool designed to prune flush, without leaving a stub. Other tools include branch bending jacks, wire pliers and shears of different proportions for performing detail and rough shaping.
Soil and Fertilization:
- Opinions about soil mixes and fertilization vary widely among practitioners. Some promote the use of organic fertilizers to augment an essentially inorganic soil mix, while others will use chemical fertilizers freely. Bonsai soil is primarily a loose, fast-draining mix of components, often a base mixture of coarse sand or gravel, fired clay pellets or expanded shale combined with an organic component such as peat or bark. In Japan, volcanic soils based on clay are preferred, such as akadama, or "red ball" soil, and kanuma, a type of yellow pumice used for azaleas and other calcifuges.
Location and Overwintering:
- Most traditional bonsai are temperate climate trees and are kept outside all year. They require full sun in summer and usually a near-freezing dormancy period in winter. Depending on how hardy the tree species is, protection from very low temperatures may be required. Certain tropical species can survive winter without a dormancy period, and can therefore be kept indoors all year.
---------------------------------------------------------------------------------------
---------------------------------------------------------------------------------------
CONTAINERS
- Bonsai pots have drainage holes typically covered with a plastic screen or mesh to prevent soil from escaping.
Containers come in a variety of shapes and colors and can be glazed or unglazed.
- Containers with straight sides and sharp corners are generally better suited to formally presented plants, while oval or round containers might be used for plants with informal shapes.
- Most evergreen bonsai are placed in unglazed pots, while deciduous trees are planted in glazed pots. It is important in design that the color of the pot compliments the tree.
- Some pots are highly collectible, such as ancient Chinese or Japanese pots made in regions with experienced pot makers such as Tokoname, Japan.
------------------------------------------------------------
Containers come in a variety of shapes and colors and can be glazed or unglazed.
- Containers with straight sides and sharp corners are generally better suited to formally presented plants, while oval or round containers might be used for plants with informal shapes.
- Most evergreen bonsai are placed in unglazed pots, while deciduous trees are planted in glazed pots. It is important in design that the color of the pot compliments the tree.
- Some pots are highly collectible, such as ancient Chinese or Japanese pots made in regions with experienced pot makers such as Tokoname, Japan.
------------------------------------------------------------
