The Q&A Archives: hydrangeas

Question: I have well established hydrangeas all over my property in part shade or sun. They are green and growing but 1 or 2 in each area has not even set 1 bud yet this year. Why? All of them are watered and fertilized the same.

Answer: There's really no rhyme or reason for the non-blooming. I suspect you are growing Hydrangea macrophylla (big leaf) and if so, they flower on new growth of the season. To maximize the flowering you should prune your plants back in the spring. This will encourage twice as many flowering stems than if you don't prune. Go easy on the ferilizer - too much nitrogen can promote lots of lush, green growth but sometimes at the expense of flowering. Wish I had more to share with you.

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