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David from California writes

Can Hi-Yield Atrazine Weed Killer treat poa annua in a fescue lawn? Will this harm the fescue?

Answer:

Hi-Yield Atrazine Weed Killer cannot safely be applied to Fescue lawns.  Because poa annua and Fescue are so closely related, there are few products that will kill the poa annua without also harming the Fescue.  Your options would be to either spot-treat with a Roundup-type product and then reseed with the Fescue in those areas, or you can use a pre-emergent like Prodiamine 65 WDG in the fall to prevent the poa from growing in the first place. Please review our Poa Annua (Annual Bluegrass) Treatment Guide for more information. 

 

Answer last updated on: 01/23/2022

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Hi-Yield Atrazine Weed Killer

Hi-Yield Atrazine Weed Killer

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