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Arborvitae

September 2010

QuestionI was wondering when is the best time to trim an arborvitae shrub? I have one that is pretty tall and wide and I did not know the best way to trim it to keep from hurting it.

 

AnswerFall is not a great time to prune shrubs in the landscape for several reasons. One, you may have a pruned look all winter long if new growth doesn't appear, and if new growth does come on late, it may not be as hardy. I would opt for late February through mid April as the prime time to prune arborvitae. Try not to remove more than one third of the plant when pruning. Also, in the case of needle type evergreens such as arborvitae and junipers, don't prune any branch too severely as they don't sprout out as readily from old wood. If you can, make sure green foliage is still on the branch after pruning.


 

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