Cute Farms Tillandsia Air Plant Fertilizer Weekly Use Plant Food How to Get Rid of Prostrate Spurge (Fast) Best Herbicides & Control Tips Sod Solutions First time propagating and using air stone : r propagation Introduction to the Basics of Herbicide Resistance When its too cold for other herbicides to be effective, Defendor specialty herbicide provides early season control of unsightly dandelions, clover, and other annual and perennial broadleaf weeds.