(This post is rated PG… seedlings should not read this without parental guidence… Yah I know, keep my day job.)
Continued from Part One in this series…
Reproduction: The development of fruit, seed pods, or cones on a tree. This usually happens during periods of active growth through to fall. Reproduction for a tree early in its development is mostly a negative thing. It is very important not to allow a tree in active development to come into a state of mature seed as the entire process robs the tree of significant energy. Less active growth will occur in a tree which has gone heavily into producing seed. Enjoy your flowers on a tree, but if it is in development – remove most of them, and be sure to remove the full flower head when it is spent. The only trees which should be allowed to fruit are ones which are mature and not in active development, and even then it is good to give them occasional years of non-fruiting seasons to maintain their health. Fruit and flowers are also the only things which will not reduce over time with bonsai horticulture. If you are working with a pear… no matter how small you can get your leaves, you will have a large piece of fruit on your tree. If you enjoy fruits, select species like crabapples (Malus) and Japanese winterberry (Illex serata) which are known for their smaller fruits/berries.
(Satsuki Azalea ‘Kaho’)
Trees allowed to flower or fruit should be well fed in order to help offset the energy being taken up in that process. This is often species specific and should be researched for the tree in question.
Stasis: The period of time between active growth and dormancy; or the state of a tree so far in its development that fine ramification has occurred which results in slow and/or minimal change in the tree. The first kind of stasis occurs when the active growing period is completed for the season and the tree is no longer putting on vigorous new growth. During this time it is building up reserves for dormancy and the next period of active growth. Some trees don’t have a period of stasis, tropical species or other vigorous trees like elms will continually put on new foliage if you continually prune it. The very nature of pruning a tree can negate stasis as many species will continually put on growth to try and build up its reserves for its dormant period.
(Scots Pine, by Dan Robinson. The foliage on this tree is less than 1/2 in.)
For a mature bonsai, stasis is the goal because the smallest possible ramification has been achieved. Since root pruning provides room for many new roots to be developed, thereby stimulating juvenile growth, the repotting of mature trees is done less often in order to slow the active growth period and prevent bursts of new growth. However, a mature bonsai kept in stasis too long can become weakened by not having new higher functioning roots, so even a mature tree needs to be reinvigorated from time to time by radical pruning of both roots and branches, necessitating the redevelopment of the tree’s structure.
(In the next segment, we going to get all stressed out… and its a long one, so bring some popcorn, I just can’t break it down more and make sense.)