Ethofumesate 4SC Select Herbicide Half Gallon Fusarium control Magnesium Sulfate Heptahydrate Epsom Magnesium Sulfate Heptahydrate Epsom Salt or sprinkling Mowing Avoid mowing 1 2 days before and after application Watering Do not water treated areas for 48 hours after application Rainfall Avoid applying if rain is expected within 48 hours Reseeding Wait at least 3 4 weeks after application before reseeding Repeat Treatment May be repeated after about 30 days if needed Maximum Use Do not exceed 2 applications per year Ethofumesate 4SC Select is a preemergence and postemergence herbicide for the control of many annual grasses and broadleaf weeds It is especially effective for control of Poa annua (Annual bluegrass) on golf turf or lawns