Developed by Iowa State University, Premerge contains 100% corn gluten, a naturally occurring substance, which inhibits the growth of a seed's tiny feeder roots. This causes the weed seedlings to die before they germinate. Premerge controls these common weeds:
Apply in early Spring, 3 to 5 weeks before the weeds begin to sprout. About the time the crocus and daffodils are blooming. Apply a second application in late Spring to control later germinating weeds.
Our 6 pound bag is ideal for garden/flower beds - it covers 300 square feet. Our 20 pound bag will cover 1,000 square feet.