Q.Blackberry Diseases
My blackberry plants (planted in spring 2008) have recently developed a white cotton-like attachment to the underside of some of the leaves. Should I be concerned? If yes, how do I treat?
Nikki
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on August 17, 2011
It sounds like you have spider mites. This article should help: https://www.gardeningknowhow.com/plant-problems/pests/spider-mite-detection-and-spider-mite-natural-control.htm
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