Butterfly Bushes

Why Are My Butterfly Bush Flowers Open Then Turn Brown?

Anonymous added on August 18, 2016 | Answered

This is an established, mature bush. I did prune it back last year. I have a full bush of blossoms, but most are opening brown and spent. Thank you

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Certified GKH Gardening Expert
Answered on August 18, 2016

This is likely a watering issue, to much or to little.
They prefer a deep watering but need well draining soil so the roots do not sit in soggy soil.
Inspect the plants for any signs of aphids or spider mites.
Neem Oil is a good treatment if you suspect insects. It works as both an insecticide and fungicide and is safe for people, pets and bees.

Here is a link with more information.

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