Field growing Bonsai trees

In order to produce a bonsai with a large tree trunk in a relatively short period of time, the process of field growing can be employed.  Field growing bonsai is the best way to mature a tree, design a good taper and begin the desired shape.  This technique does not require vast open spaces but can be done around the home and garden, in raised planters or even in large containers. 

The process entails taking a sapling and allowing it to develop rapidly prior to replanting it into a bonsai pot.  The best trees for this are fast growing species such as maple, elm or Scots pine but all types of trees or can be used in field growing. Depending on the species, it is best to leave the tree alone for up to five years.  It must be understood that the more the tree is trimmed and pruned the longer time it will take to develop any trunk mass.  When the tree has matured and the trunk has thickened to its desired width, it is then cut down to a 'tapering' height.  This is the most difficult process to undertake and takes the most time and patience.  The taper of the tree is the design feature that establishes how the bonsai will be maintained.  Most branches and limbs will be removed in favor of the correct taper.

Promoting root growth is also important but must be continually checked.  It may be necessary to lift the tree every couple of years and trim the roots just as one would a bonsai.  Placing a stone or brick under the tree when it is first lifted will develop a splayed root structure that will help with transplanting the tree into a pot when it is time to make the tree into a bonsai. 

Field growing plants and trees in your garden is another aspect of the art of bonsai and can be just as challenging and thus just as rewarding.