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Oak Trees

Q.White Residue On My Oak Tree Trunk And Leaves

Zone 77494 | reggieut@aol.com added on October 21, 2020 | Answered

I have a white residue on part of my oak tree trunk and several nearby leaves. It looks like snow on the leaves. How do I get rid of it? Thanks !

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Certified GKH Gardening Expert
Answered on October 21, 2020

It looks like there are multiple insect pests. Caterpillars can make webbing as you see on the trunk. Mealy bugs are what the clumps of white on the leaves are. Both can be treated with insecticides, but you will want to remove as much of them before treatment. This will help by exposing any eggs that may be hiding.

Here are some articles that will help:




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