Ortho's WeedBGon for crabgrass works, as does Bayer's All In One weed killer. This time of year, the surrounding grass might turn yellow - it's best if applied when temps are below 90 degrees, F. A second shot of the weed killer after 7-10 days might be necessary for a total kill. If there's only a little bit of it, you can simply pull it out of the ground by hand.
Or, simply wait a few weeks. As temps start to cool off, the crabgrass will die. But before it does, it will drop thousands of seeds. So, be sure to put down a preemergent herbicide such as HALTS early next Spring. This will actually prevent crabgrass from even germinating for up to 4 months.
2007-08-16 07:24:00
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answer #1
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answered by jeepdrivr 4
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This time of year, probably nothing will work. You need to put down a preemergent crabgrass killer next spring......around the time the forsythias bloom, though I'd contact your Extension Service horticulturist to determine the exact time for your area.
The preemergent prevents the crabgrass seeds from completing germination. After the grass has begun growing, your last chance is a product called MSMA, but it often burns the perennial grass in your lawn as well.
2007-08-16 11:58:59
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answer #2
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answered by fluffernut 7
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After it is well established it is hard to get rid of, other than wetting the ground well and pulling it, I have spent days doing this. Early in the spring apply SCOTTS crabgrass killer, it comes in a blue bag, and it's yellow (follow the instructions) and will stain sidewalks ect.
2007-08-16 17:11:09
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answer #3
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answered by MR. T. 6
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Use this chemical with the brand name of Trimec Plus. It has to say plus otherwise it wont kill the crabgrass. Be careful though it has a temperature restriction.
2007-08-16 11:59:17
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answer #4
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answered by mowman 2
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You can spot spray them with roundup. Try to keep it on the weed and don't spray if it is windy. Crab grass is hard to get rid of. They do have grab grass preventer that you can buy. If you have a lot, you might want to put in a new lawn. Mow everything very low to the ground and spay it all. Roto till the area and wait 2 weeks before you put in a new lawn. You have to buy the correct roundup though. Ask the person at your favorite home and garden store for the right product to buy. You can always pull them out one at a time. Good luck
2007-08-16 12:16:50
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answer #5
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answered by Golfdog 1
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There are a few good suggestions here... per, this isn't the best time of year to deal with CG... to properly deal with it, your lawn should be treated in fall and spring with a preemergence product.
I wanted to also add one of the most important steps... set your lawn mower on a high setting. 3 Inches is the best height for a healthy lawn... as well- CG can't compete with a healthy lawn grown at this height. You will notice CG take hold in bare patches. It doesnt like to be crowded!
2007-08-16 22:13:38
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answer #6
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answered by Jason F 3
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Lowes/Home Depot have lawn fertilizers that kill crab grass specifically. I pull mine out by hand when there's just a few sprigs, but put the fertilizer to deter an outbreak.
2007-08-20 09:28:37
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answer #7
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answered by acksherly 3
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dont water it and put some grass killer on it
2007-08-16 11:51:03
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answer #8
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answered by Anonymous
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use a condom.
2007-08-16 11:53:24
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answer #9
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answered by Introverted extrovert 4
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