Why we decandle pine bonsai – Bonsai Tonight

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Sometimes the reasons why we decandle pine bonsai can get lost in the discussion of how we decandle. In short, decandling is the single-most important technique used to develop beautiful pine bonsai.

Black pine

Black pine exhibited at the 2011 Taikan-ten

Why decandle red and black pine bonsai?

  1. To stimulate back budding. The stress caused by removing spring growth can activate dormant or adventitious buds on woody growth. Back buds – buds that develop not at the ends of branches but from within the tree’s interior – allow us to maintain the size and shape of our trees. Without them, bonsai would grow larger and larger each year.
  2. To increase branch density. Decandling adds density by replacing single spring shoots with multiple summer shoots. Decandling further increases density by stimulating adventitious buds at the base of spring candles – barren areas that don’t typically produce buds. And as summer shoots are usually smaller than spring shoots, internodes are further reduced yielding more refined ramification.
  3. To regulate vigor. Decandling is a useful technique for keeping new growth on pine bonsai in check.
  4. To promote balance. Various decandling techniques can be used to decrease vigor in strong areas and increase vigor in weak areas to improve overall balance.
  5. To reduce needle size. Red and black pine bonsai are at their most beautiful when the needle size is a good fit for the tree. Decandling can let us produce short needles on small trees and larger needles on larger trees.

Up next week – how to prepare trees for decandling.

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