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Q&A Home

Edward from Vancouver, Wa writes,

Can I mix Roundup QuikPro and Speedzone together safely to spot spray a vacant field?

I have Willow herb weeds that seem resistant to QuickPro. Speedzone seems to do the job on them out in a vacant lot so no worry about killing grass. Wondering if it is safe to mix the two together + would I mix each chemical separately, say one gallon each, and put them together to total two gallons OR add both chemicals to one gallon at the same mixing? Are they compatible?


You can actually tank mix the RoundUp QuickPro and Speedzone in the same tank to apply together to the troublesome weeds. We always recommend to follow the more strict of the two labels when mixing ingredients and be sure to look for any incompatibilities in the tank first before using the products (like discoloring, clumping, etc) and then proceed with treatment.

Answer last updated on: 07/07/2015

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