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Paul from Pierson Township, Mi writes

Can I use a post-emergent now, approx. 15 days after applying the crabgrass pre-emergent?

I've got an outbreak of hairy bittercress and the label on the pre-emergent (prodiamine in Sta Green CrabEx+) doesn't list this. Am I ok to use something like a Q4 or Acreage Pro now?

Answer:

You can use a post-emergent herbicide to target young, actively growing weeds as long as you follow the label instructions and your desirable turf is established and healthy. Be sure to follow any precautions regarding seeding intervals as well.

Answer last updated on: 05/04/2016

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