Q.Holly Pests
My holly bush foliage seems to be less dense this year and I’ve noticed some black spots on some of the leaves. Do you think an insect or disease is causing this? Thanks very much for your advice.
Nikki
Certified GKH Gardening Expert
Certified GKH Gardening Expert
Answered on May 8, 2014
It sounds like it may be tar spot. This article will help you learn more: https://www.gardeningknowhow.com/ornamental/shrubs/holly/holly-problems-holly-leaf-spot-or-holly-tar-spot.htm
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