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Rob from Lincoln, Nebraska writes

Will Bonide Grass Beater Over-The-Top Grass Killer Concentrate harm Penstemon?

Answer:

Bonide Grass Beater Over-The-Top Grass Killer Concentrate is not labeled as safe for penstemon. We cannot advise it. We would recommend for you to spot treat with a Roundup-type product (such as Roundup QuikPRO). 

Answer last updated on: 11/23/2017

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