Step 1 Preen Routine First remove any existing weeds to start the season with a clean slate. Take care to remove their roots. Preen doesn't kill existing weeds. It stops new weeds before they start by preventing their seeds from rooting. Step 2 Preen Routine A three-inch layer of mulch helps retain soil moisture, keeps soil temperature even and looks nice and tidy. It also has weed-preventing properties of its own. Mulch deprives weed seeds of sunlight to help undermine their growth. Step 3 Preen Routine Sprinkle Preen Garden Weed Preventer on top of mulch. Apply the product when the garden is dry so Preen granules won't stick to wet leaves. Tip: Preen's 16 lb pail includes a handy shaker scoop, designed to help evenly distribute granules at the right rate. Step 4 Preen Routine After applying Preen, water in the granules to release the weed preventer ingredient within two days of application. Once activated, Preen bonds with soil particles to create an invisible weed-control barrier in the top layer of soil that prevents weed seeds from forming roots. Preen weed preventers won't build up in the soil, wash away or leach into ground water.
Stop weeds before they start for up to 3 months guaranteed
Safe for use around over 200 established flowers, vegetables, trees and shrubs
Apply anytime in spring, summer or fall
Not for use on lawns. Weed preventer, does not kill existing weeds