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Herbicide Damage on Mature Honeylocust

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From: Marilyn Collmar
Overgaard, AZ
My son sprayed the ground around 2 mature Honey Locust trees & it seems many of the leaves are turning brown....don’t know if weed killer affected trees or are they naturally losing their leaves (early August)? Product used full strength...,,Spectracide Weed & Grass Killer Extended Control.

Extension Message
From: Jay Hayek
Extension Specialist, Forestry
Department of Natural Resources and Environmental Sciences
Hi Marilyn:

There is a good chance that the herbicide applied by your son either drifted or volatilized during the application process or soon after.

Due to the fact that you reside in Arizona, I will refer you to your local Univ. of Arizona Extension office for any additional follow-up questions that you may have!

Best of luck!

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