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Jose from Fayetteville, Nc writes

Is it too late to apply Certainty to overseeded centipede that's springing up?

I have newly overseeded centipede growing on an established lawn to thicken my centipede lawn. It sprung up this week. Is it too late to apply Certainty for Poa annua? If so, how long do I need to wait before using Certainty?


Certainty is a post emergent product that can be applied to actively growing weeds. For the best timing on when to apply this in your specific region, we would suggest contacting your Master Gardener at your local cooperative extension office. This product may be applied once the grass that you overseeded is established typically after mowing least 2-3 times or at least 30 days.  Please be sure to review the product label for more information and complete application instructions.

Answer last updated on: 05/26/2021

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