Q.How Can I Prevent Black Spots On Purple Dragon Lamium?
Planted for the first time last spring. Flowered beautifully but developed black spots. Stopped flowering and looked awful. Is there such a thing as a pretreatment for this problem? Thank you:)

GKH_Susan
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on January 14, 2021
This link will give you an entire page of articles about leaf spot that should help:
https://www.gardeningknowhow.com/search?q=leaf%20spot
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