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Garlon 4 on Sumac (Rhus spp.)

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From: Donna Murray
Geneseo, IL
I have done some research and want to eradicate sumac with basal application of Garlon 4. After a spring burn a small patch has grown rampant in my rural backyard. I feel confident about its use but where can I obtain?

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

Garlon 4 and its generic equivalents will work on sumac (Rhus spp.). However, it is important to note that volatilization of ester (i.e., oil-based) herbicides is very common during warm weather.

Therefore, I would encourage you to wait until late fall or winter before applying this ester formulation herbicide to your sumac plants.

Tricloypr ester can be purchased at local farm stores and elevators.

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