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Keith from Milwaukee Wi writes

Will Garlon 4 Ultra Herbicide kill poison sumac in a swampy area with a combination of cut and standing plants?

Answer:

Garlon 4 Ultra Herbicide is labeled to control woody plants such as sumac and permitted to be used in swamp areas. Please refer to page 5 of the product label for mixing rates.   

Answer last updated on: 02/20/2017

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