Hydrangea - Knowledgebase Question

laguna hills, Ca
Question by wnoelsimko
August 16, 2009
I have a hydrangea for several years that is a big beautiful plant, but never has a bloom on it. Several feet away I have another hydrangea that is smaller and always blooms. What should I do with the one that doesn't bloom.


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Answer from NGA
August 16, 2009

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The most common reasons for non blooming in hydrangeas is 1) lack of adequate sunshine; 2) improper pruning; 3) too much nitrogen fertilizer. Hydrangeas should get about 4 hours of morning sunshine in order to bloom well. They develop flowers on new growth that emerges from old wood. Prune your hydrangea in the early spring, leaving 12-18" of old stems on the plant. New flowering wood will develop on the old stems. Finally, if the non blooming hydrangea is near a lawn or other plants that you regularly fertilize it might be getting an overdose of nitrogen. This can promote lush, green growth but at the expense of flowering. Hope this information helps you determine just why your hydrangea won't bloom.

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