Masahiko Kimura The Bonsai Pruning Removing
whole branches or some parts of them is customary in bonsai-trees creation
and shape maintenance. Formation pruning:
it is carried out on virgin materials or pre-bonsai trees.
It consists in a considerable reduction of the existing branches,
in order to create the required shape and proportion. Removing or reducing
operations can apply both to the main and to the secondary branches. Conifers
need to have at least one or two buds left on the stump, because these
species are not able to sprout after the pruning; on the contrary this
problem does not exist with a lot of deciduous trees, as they can
bud anywhere on the trunk and the branches (maples, elm-trees, olives,
oaks, etc.) Such a characteristic allows removing completely
all the vegetative part. This practice reduces the tallness of old
characterized by wide nebari specimens and must be carried out in late
autumn or at the beginning of spring. So, when the hot weather starts, the
great vegetative push will help the birth of several buds, with which you
can rebuild the branches. Maintenance pruning:it
is useful to keep the design-required shape and in the meantime to help
the branches to thick. It applies to deciduous trees and
consists in the removal of the twigs growing in unwelcome areas (it is the
case of olives and oaks, which tend to produce buds everywhere and during
the whole vegetative season), as well as in the cutting of twigs top. This
practice is used for stimulating the birth of posterior buds and
obtaining two new twigs from just one, others from every secondary twigs,
and so on. In a short time you will get a new platform from a twig. On the contrary Junipers and Cypresses need continual trimming during the whole vegetative season: you will remove just the parts of the twigs that get out of the shape-line. You will also remove the twigs that grow low. You will proceed to poll deciduous trees and Larches tender twigs at the first or second inter-knot from spring onward. You should always use your fingers to trim all species, to avoid the left portion to brown.
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