The Q&A Archives: Endless Summer Hydrangeas

Question: Southern NH... My hydrangeas seem to be doing well with new growth from the bottom. I did not cut the dead wood off as yet due to all I have read. It is showing new growth on some of the dead wood (again from the bottom) so how far up from the new growth should I prume? and when?

Answer: If the stems are truly dead they can be cut off, but it is worth waiting a little longer to make sure they are not going to bud anywhere else beginning from the bottom up. Sometimes it takes them a while to gather their strength, in the meantime they look sort of ... dead. You would cut just above the last live growth taking care not to damage that. This hydrangea blooms on both old and new wood. The buds on the old stems open first followed by the buds that form on new wood. So to have the full range of bloom season you need both old and new. Enjoy your Endless Summer!

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