I sprayed well established yellow nut-sedge in early September. Temperatures had been 90 - 105 degrees. I followed the directions for hand sprayers. I did not add a Surfactant. I got minimal efficacy after 2 weeks. I will respray in early Spring as that is the recommend time. Some of the early growth nut-sedge 2 or 3 leaf 8 inches tall was well killed out.
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