PRUNING - Knowledgebase Question

kirkland, wa
Question by zipper678
September 3, 2007
I have several Rhodey's that have gone without pruning for at least 2 years and need to be pruned/trimmed back. When is the best time of year to trim back these and other large evergreen shrubs? And is there any additional concerns or considerations I need to be aware of?


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Answer from NGA
September 3, 2007

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Rhododendrons develop leaf and flower buds during the summer months so pruning in September will likely remove next year's flower display. If possible, wait until after flowering has finished next spring and then prune your rhodies. Prune by late June and you should still have plenty of flowers for the next year.

The general rule of thumb is to prune shrubs immediately after they have finished flowering. If you have evergreens that do not flower, early spring is the best time to prune them.

Hope this answers your question!

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