Hydrangeas forum: hydrangea

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Jul 10, 2016 10:58 AM CST
I have big leaf blue hydrangea plants that have not bloomed this summer.
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Name: Christie
43016 (Zone 6b)
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Jul 10, 2016 11:19 AM CST
Try some aluminum sulfate.
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Name: Sue
Ontario, Canada (Zone 4a)
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Jul 10, 2016 12:40 PM CST
Welcome! Have you had them long, and have they flowered in previous years? There is a lot of dead wood among them, I assume they were killed back by winter. Or might you have pruned them at some time? They flower on old wood so if the buds are killed or pruned off at the wrong time they won't flower.

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