Controlling Sumac

By University of Mo. Extension

09-02-2008

Q: Do you have recommendations on how to cut, handle and control sumac? Should we brush hog it, spray it or use our new Dr. Field and Brush mower to cut it down? I also understand that it is poisonous and very dangerous. How do you suggest I get rid of it? – D. H., Shell Knob, Mo.

A: Great question and but first, I need to clarify an error in your question.

According to Pat Byers, horticulture specialist with MU Extension, “poison sumac is not native to Missouri and it is not listed in either Steyermark or the Missouri Conservation Department book on shrubs and vines. There are, however, several species of sumac (Rhus) found in Missouri.”

That is important to note because it changes how you address the issue of sumac in your fields.

Another important note, according to Tim Schnakenberg, the MU Extension agronomy specialist in Stone County, says that mowing or cutting the sumac down will hide the problem but will rarely give good control.

“Mowing brush like sumac, hedge or honey locus can actually make the problem worse,” said Schnakenberg.

According to a “pasture weed and brush control” publication available at the Greene County Extension Center, the best way to control Sumac is to use Crossbow or Remedy (products containing triclopyr) when it is actively growing.

For more information contact the nearest MU Extension Center. The following University of Missouri Extension agronomy specialists can also help: Tim Schnakenberg at (417) 357-6812, Brie Menjoulet at (417) 335-1735 or Jay Chism at (417) 682-3579.