Answer: Japanese maples require very little pruning, primarily to remove any dead or broken branches when they happen. If the tree is growing very densely, you might consider optional thinning, doing it very lightly and deftly to accentuate the natural trunk and limb structure of the tree. This can be done in June. Never remove more than ten percent of the branches in a year. If you have an older, established tree, please consider consulting on site with a professionally trained, certified arborist with extensive experience in fine pruning of ornamental tres.
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