The question of the year “Why doesn’t my hydrangea bloom?” This is a tough one to answer since there is more than one type of hydrangea and there are multiple reasons it might not be flower ranging from deer nibbling the buds off (but leaving the stems) over winter to dryness during summer. There are even hydrangeas that have a hardy root system but the stems are not so, even though they grow every summer the buds for flowers are lost every winter. Here’s a link to an article that addresses these issues. There is no single answer that will apply to every hydrangea in every situation.

http://gardeningsimplified.tumblr.com/understandinghydrangeas