hydrangeas - Knowledgebase Question

Plantsville, Co
Avatar for kroller57
Question by kroller57
May 14, 2009
I have a blue hyrangea that is about 8 yrs. old, and it bloomed twice since I've had it, and it doesn't bloom again,I've put acid in the soil, and that didn't work. I have another on near it, and it is a ruby one , and it blooms all the time. Any suggestions?

Answer from NGA
May 14, 2009
The most common reason for non-blooming in blue hydrangeas is winter damage. These bloom on old wood that grew the previous year, so if winter kills back the plant each year, there will be few or no blooms. For the same reason, pruning in spring can limit or eliminate blooming. Many varieties are root hardy in your zone but not stem hardy, so I suspect hardiness is the problem rather than siting or care. Wish I had better news for you!

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