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How soon can I reseed after spot treating with Roundup?

Posted by susanpmi (My Page) on
Tue, Aug 13, 13 at 11:28

I am about to spot treat some Canadian Thistle in my lawn with Roundup. I have been mowing it down for two summers and it is laughing in my face and sending shoots to my garden beds. I am sure I will get a few bare spots with the treatment, and I am wondering how long I should wait before patching the lawn with seed. I want to get it going as soon as possible after the thistle is dead, because I am in Michigan and first frost can come early! Can I plant right away or should I wait a while?

Follow-Up Postings:

RE: How soon can I reseed after spot treating with Roundup?

The label will tell you to wait a week. If you can wait that long, then wait a week. But in reality, you can reseed right away because Roundup only works through plant foliage, which seeds don't have.

RE: How soon can I reseed after spot treating with Roundup?

It may take several applications to kill Canada thistle. I'd wait until you are sure they are dead.

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