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Knockout Rose Bushes

Q.Powdery mildew on base of double knockout rose bushes

Zone 63089 | Anonymous added on June 5, 2020 | Answered

Powdery mildew on base of double knockout rose bushes

A.Answers to this queston: Add Answer
Certified GKH Gardening Expert
Answered on June 9, 2020

Here is information on powdery mildew from our resident rosarian that should help.


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