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Q&A Home

Rich from St. Louis, Mo writes,

How much Roundup Pro Max will i need to kill a 3.5 acre field filled with grasses and weeds?

Should i spray now or in spring before soybean planting?


You will need two 1.67 gallon jugs of Roundup Pro Max to kill all vegetation on 3.5 acres. Simply mix 2 oz of RoundUp Pro Max per gallon of water for most applications. Roundup Pro Max does not provide long term control so we would recommend treating two weeks prior to planting.

Answer last updated on: 10/31/2014

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