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Steve from Pleasantville, Oh writes,

Will Tenacity affect all varieties of Poa?

I have what I believe is Poa but am not certain of the variety (annua or other). How can I determine what I have?


Tenacity Herbicide is not labeled to control Poa Annua/Annual Bluegrass in a post emergent application, it only states that it could cause injury to it if sprayed.  It is only labeled to be used to suppress poa annua when used as a pre-emergent. We recommend to contact your Cooperative Extension Office and speak with the Master Gardener to identify the weed species you need to treat for.

Answer last updated on: 05/18/2015

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