Product Q&A

Answer:

Hi-Yield Grass Killer is a post-emergent selective herbicide that kills annual and perennial grasses in ornamental landscapes and desirable plants. Iris plants are tolerable per the product label. You will use 1 fl. oz. per gallon of water and add a surfactant such as Hi-Yield Spreader Sticker.

Answer last updated on: 04/24/2015

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