BushDoctor
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on September 23, 2019
That is one of many hard-to-pin-down fungal infections! You will need to remove infected growth and treat with a fungicide. This article will help: https://www.gardeningknowhow.com/garden-how-to/info/using-fungicides-in-garden.htm
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