Tyler from South Carolina writes
Grass Out Max (Clethodim Herbicide) can be used around established sunflowers to kill actively growing grasses however will not have any affect on broadleaf weeds. Also, being a post emergent herbicide there is no affect on seeds in the soil that have not yet germinated. A surfactant or crop oil concentrate is recommended to be used in the tank for best results.
Answer last updated on: 05/21/2024