Astilbe Plants

How to Promote Astilbe Blooms?

Anonymous added on August 18, 2016 | Answered

I planted Astilbe in my shade garden late spring/early summer. I have tons of leaves and they are very tall (12" or more) but there are no blooms. They are kept moist due to the location; I hardly have to water them. I read now that compost should have been used to promote growth of the blooms. Is there anything I can do now to get some late summer blooms? I am in coastal VA.

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Certified GKH Gardening Expert
Answered on August 18, 2016

You likely have high Nitrogen in the soil, which causes lots of lush greens but little flowering.
Phosphorous can be added and Bone Meal is a good way to do this.

Here is a few links for you.

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