Crabgrass in lawn - Knowledgebase Question

Kirkland, Wa
Question by amyliareed
March 1, 2010
How do you recommend getting rid of and preventing crabgrass in the lawn?


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Answer from NGA
March 1, 2010

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Crabgrass starts germinating when soil temperatures are 50 to 55 degrees F for ten or more days and germination can take place over a 6 week period. Pre-emergence herbicides provide excellent weed control for crabgrass. The compound prevents the weed seed from germinating, but it won't kill the newly sprouted seedlings. Late April to early May is an ideal time to apply pre-emergence control. A second application might have keep your lawn a little more crabgrass free. At this point, you might want to try raking it out or hand pulling. Proper lawn maintenance practices can limit crabgrass invasions. A dense stand of turfgrass prevents the weed from germinating and establishing. Best wishes with your lawn.

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