Pruning Mature Trees
Pruning will move from removing branches maintaining a symplast (leaves) in young trees to removing symplastless (no leaves) branches in mature trees. A young tree with 100% dynamic mass can have a rather large dose of symplast maintaining branches removed. As little as possible should be removed from a mature tree. Mature trees will have a greater number of symplastless branches compared to a younger tree. See "Symplastless Branch Removal"
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