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I want to seed but also want to put down crab grass preventer #863734

Asked April 08, 2024, 2:54 PM EDT

Can they be done together at the same time? If not, which one first? And how long before applying the second?

Hennepin County Minnesota

Expert Response

Crabgrass prevention chemicals work by preventing seed germination, including grass seed.  You cannot use them before the grass seeds sprout. This means you can’t use the crab grass prevention this season because when the grass comes up so will the crabgrass.
In areas where grass is already growing you can use crab grass prevention. 
MaryKay, Master Gardener, Tree Care Advisor Replied April 17, 2024, 6:41 PM EDT

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