Preen Garden California Approved Grass & Weed Preventer, 5.625lbs

Remove any existing weeds, taking care to remove their roots. Preen Weed Preventer products do not kill existing weeds, they prevent them. Mulch the Area A three-inch layer of mulch helps retain soil moisture, keeps soil temperature even and looks nice and tidy. Mulch also has preventative properties of its own, assisting Preen in keeping weeds away. Apply Preen Sprinkle Preen on top of mulch. Apply when the garden is dry so Preen granules won’t stick to wet plant leaves. Water to activate after applying Preen, water the granules to release ingredient that forms an invisible barrier that blocks weeds beneath the surface.