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Valerie from Fort Collins, Co writes

Will Tenacity kill unwanted grasses in Kentucky bluegrass turf lawn?

Local extension office recommends Tenacity to kill off patches of fine fescue in a Kentucky bluegrass if applied at the rate for Kentucky bluegrass. What would that rate be and do you think this method will work well?

Answer:

Tenacity Herbicide is labeled to be safely applied to fine fescue and is not labeled to kill it so we cannot recommend it for that use.  When you are trying to remove another cool season turf type from KGB the best option is to use a product like Roundup Quikpro (or non selective/glyphosate) and then re-seed with your KBG.

Answer last updated on: 04/01/2019

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