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will be 'finished' more quickly; very often this results in a weak tree whose
development time is greatly increased.
It should be added that it is important not to be tied to calendar dates when
deciding when to repot, prune, wire or carry out any other bonsai technique.
The exact timing necessary depends on your national, local climate and the
climate or conditions that your trees are subject to, the health of individual trees,
and the actual species of tree. It is not unusual to have trees of the same species
and same position in a garden that require repotting maybe a month apart!
For this reason you must learn to time your work according to the condition
of an individual tree. For instance, repotting of a deciduous tree should be
carried out as the new buds start to extend and not because some guy a continent
away says to do it in February or March. Many bonsai books will give you a set
date to try and adhere to. This is probably done to simplify timing explanations
but it may well also cause problems with the health of your bonsai.
It maybe a harder way to learn and remember at first but by learning to react
to your trees, your timing will be better. Instead of learning a calendar date, learn
the signal that the tree will give you. Try to find sources that explain which
signals in your trees to look for.
Recuperative Timing
The second form of timing that must be considered is recuperative timing.
This is the amount of time a tree requires to recuperate or recover from work
carried out on it.
When a tree is worked on there is a period of time where it is in a weakened
state and/or it's resources are tied up in response to the work. During this time,
additional work may reduce the already weakened tree to a state where it is
unable to recover and either grows very slowly or even dies.
An example might be defoliating (removal of all the leaves in midsummer)
and root pruning. Either of these techniques can be carried out with great success
on healthy, vigorous trees. However, defoliating a tree at midsummer that has
yet to recover fully from it's spring root pruning can have a devastating effect on
a bonsai.
Not allowing enough recuperative time between work is a common mistake
to make, particularly for beginners. Judging the time needed to recuperate
depends on many factors such as the vigour of the tree species used, the
individual trees health at the time of work and the nature of the actual work that
is carried out.
On a general basis, the more invasive the work, the longer a period of time is
required for recovery. Recovery can be counted in days for the trimming of a