Preen Garden Weed Preventer 16 Lb Container and Scoop


Cover 2,560 sq Ft. Preen Weed Preventer stops weeds from germinating in flower and vegetable gardens, in ground covers and around trees and shrubs. Preen will not kill existing weeds. It will prevent new weeds from sprouting — eliminating the need for difficult and time‑consuming hand‑weeding. Without weeds, your valuable plants can grow larger and stronger.

Your beds will stay neat and weed-free all season long!


How to Apply:

When plants are dry, sprinkle this product on soil surface at rate given below for your specific planting situation. Once activated by watering, it forms a weed control barrier in the top layer of soil (1 – 2 inches), preventing weed seeds from germinating. Disturbance to the soil surface after activation may result in erratic weed control.

When to Apply:

Apply Preen Garden Weed Preventer during the growing season around established plants and transplants. Preen should not be used on flower seeds. It can be used after flowering plants have germinated and are 2 – 3 inches tall. Preen may also be incorporated into the soil when seeding vegetables or applied after mulching beds. By applying Preen as early as possible, you can eliminate the need for hand‑weeding.

Rain does not wash this product out of the soil. To keep beds weed‑free all season long, reapply Preen weed preventer every 9 – 12 weeks.

Applying Around Established and Transplanted Plants:

For flowers, roses, herbs, ground covers, ornamental grasses, shrubs, trees, and listed vegetables at least 2 – 3 inches tall, sprinkle Preen Garden Weed Preventer evenly over the entire soil surface, at the rate of 1 oz per 10 sq ft, being sure to keep granules away from plant roots and foliage. Immediately water. If watering-in is not convenient, lightly rake into soil surface. Always wash or brush off stray weed preventer granules from plant foliage to avoid damage or discoloration.

Applying with Mulch:

For best weed control, we recommend applying Preen Garden Weed Preventer after spreading mulch on your flower and shrub beds. Sprinkle Preen on top of the mulch being sure to keep granules away from plant foliage. Immediately water this product into the mulch. If watering-in is not convenient, lightly rake into top layer of mulch. Always wash or brush off stray granules from plant foliage to avoid damage or discoloration.

This is not the product label. Always read and follow directions on the product label. Use only as directed.

Weeds Controlled

annual bluegrass (Poa annua), barnyardgrass (Echinochloa crus-galli), brome (Bromus spp.)

carelessweed, carpetweed (Mollugo verticillata), cheat grass (Bromus tectorum), chickweed (Stellaria media)

Crabgrass (Digitaria sanguinalis), fall panicum (Panicum dichotomiflorum), Florida pusley (Richardia scabra)

goosefoot, goosegrass (Eleusine indica), guineagrass (Urochloa maxima), hare barley (Hordeum murinum ssp. leporinum), henbit (Lamium amplexicaule), Johnsongrass (Sorghum halepense), junglerice (Echinochloa colona)

kochia (Kochia scoparia), lambsquarters (Chenopodium album), lovegrass (Eragrostis curvula), prostrate knotweed (Polygonum aviculare), puncturevine (Tribulus terrestris), purslane (Portulaca oleracea), rattail fescue (Vulpia myuros), Russian thistle (Salsola iberica), sandbur (Cenchrus spp.), signalgrass (Brachiaria spp.)

southwestern cupgrass (Eriochloa acuminata), sprangletop (Leptochloa spp.), stinging nettle (Urtica dioica)

stinkgrass (Eragrostis cilianensis) , Texas panicum (Urochloa texana), wild cane (Sorghum bicolor)

wild oat (Avena fatua), wildcane, witchgrass (Panicum capillare), woolly cupgrass (Eriochloa villosa)

yellow foxtail (Setaria glauca)




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