Holly Bushes

Holly Bush

harper added on April 23, 2011 | Answered

On my holly tree I have some pests that are like grey oval dots of aphids, evenly spaced out along the branches. Also, some leaves have what looks like sooty leaves. Can you help please? HARPER

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Certified GKH Gardening Expert
Answered on April 23, 2011

This is most likely aphids or mealy bugs. The black residue is sooty mold, which is caused by the pests. I would treat the plant with neem oil. It is effective against both of these bugs, as well as the sooty mold. Here is more information that may help you:

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