Q.lilacs have white powder on the stems. What can I do.
I have never had this before. On the leafs but not on the stems. What can I do?

GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on September 2, 2020
If you don't think it looks like powdery mildew, it may be scale, which is common with lilacs. This article tells how to deal with it.
https://www.gardeningknowhow.com/ornamental/shrubs/lilac/common-lilac-problems.htm
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