Control of Cheat Grass near Sisters

Asked June 14, 2016, 12:01 AM EDT

We recently completed a residential new construction NE of Sisters. Where the land was undisturbed, there is a ample supply of native bunch grass. Where equipment disturbed the land, Cheat Grass came with a vengeance this Spring. We have regularly pulled the green, now dry Cheat grass, piled and covered to burn in the Fall. The question. Is there a spray product that can be applied in the Fall to inhibit seed germination for the Spring 2017, and not hurt the native grasses? Can Native grass seed be planted this October to winter over to Spring, with a Cheat Grass treatment applied? Thanks, Bruce Carpenter

Deschutes County Oregon weed issues

1 Response

Hi Bruce, yes, there is a product that can be put down this fall to help control the cheatgrass invasion. The chemical is called imazipic and is available as plateau or panoramic. The negative to this chemical is that it takes a very small rate of application and slight deviance can kill native grasses so I recommend that it is applied by a professional. You will not be able to seed native grasses at the same time as they will not be very successful if at all.

You could wait until the cheatgrass emerges this fall and kill it with glyphosate, the chemical used in RoundUp as well as many other products, and put native seed in after you feel that you have a good kill of the cheatgrass. The problem with this is that there is a lot of cheatgrass seed in the ground and it will come up in the spring too, at a rate much faster than the natives.

There is no magic potion for this problem, I wish there was.