Collected Beech Bonsai Progression Series and Why You Should Not Chop a Trunk Too Early

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During the Spring of 2007, I dug the tree back out of the ground, planted it into a bonsai pot and styled it for the first time. I was pleased with the result as the bonsai had a wild and natural form rather than a contrived pine image.

beech bonsai

May 2009: After two further years of development, the ramification of the branches had been greatly increased by leaf-cutting in early Summer (see advanced beech pruning techniques described here)

Final Height 17"/42cm

beech bonsai

beech bonsai

These two views show the Beech bonsai from first the left and then the right hand sides.

beech bonsai

This image from the front/right view reveals something interesting about trunk and taper development in bonsai that is often misunderstood by enthusiasts new to field-growing and trunk-building.

beech bonsai development

This image composite shows the bonsai from the same angle at three different stages; in 2001 after collection, in 2003 after two years growing in a pot and finally in 2009 after 4 years field-growing and a further 2 years cultivation in a bonsai pot.

Over 8 years, the new leader (that the trunk was chopped to in 2001) has thickened, taper has been created and there is now a smooth transition from the original trunk through to the original branch.

However, despite the new trunkline increasing in diameter by 3 or 4 times its original size, the original trunk has not thickened at all. The diameter of the new trunkline has simply 'caught up' in size with the original trunk.

Very often I have seen enthusiasts fail to understand that when developing a trunk for bonsai in the ground, the tree must first be grown freely until the base is the desired thickness intended for the bonsai that it will one day become. The example above perfectly illustrates that after trunk-chopping, the trunk base will barely thicken (if at all) until the new sections above it have reached the same diameter. By which point the taper (and the purpose of trunk chopping) has been lost.

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