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Help Killing Crab Grass!
Posted: Mon Sep 04, 2017 4:24 pm
by bigoak
What can I spray to kill crab grass in my lawn?
Re: Help Killing Crab Grass!
Posted: Mon Sep 04, 2017 6:42 pm
by Smoke68
What species of grass is your lawn made up of? That's pretty important.
Re: Help Killing Crab Grass!
Posted: Tue Sep 05, 2017 12:42 pm
by bigoak
Sorry, it's centipede grass.
Re: Help Killing Crab Grass!
Posted: Tue Sep 05, 2017 1:52 pm
by Smoke68
Re: Help Killing Crab Grass!
Posted: Wed Sep 06, 2017 8:14 am
by cajun squealer
Atrazine or imazapyr.
Re: Help Killing Crab Grass!
Posted: Thu Sep 07, 2017 12:46 pm
by johndavid78
You have several options, but good luck finding them:
sulfentrazone + prodiamine mix (Pre-emerge and early post-emerge control - use lower rate for centipede)
DCPA (pre-emerge)
flazasulfuron (post-emerge)
dithiopyr (pre-emerge)
pendamethalin (pre-emerge)
bensulide (pre-emerge)
Atrazine can only provide limited control of crabgrass. It is meant to target broadleaf weeds.
Re: Help Killing Crab Grass!
Posted: Thu Sep 07, 2017 3:12 pm
by bigdecoy
I think I would check the label before using imazapyr on my lawn.
Re: Help Killing Crab Grass!
Posted: Thu Sep 07, 2017 3:30 pm
by reservoirdawg
Warm winter + wet summer= lots of crabgrass. I wouldn't worry about it this late in the game. Preemerge next year.