Preen Extended Control Weed Preventer Shaker


Covers 805 Sq Ft. For 50 years, gardeners have trusted Preen¬ģ Weed Preventer products to help keep their garden and landscape beds weed-free for months. Preen Extended Control Weed Preventer is the longest lasting Preen yet, stopping weeds for up to six months per application. It‚Äôs labelled for use around 600 plants in perennial flower beds; around groundcovers, trees and shrubs; and in xeriscape settings and rock gardens. Preen Extended Control¬†Weed Preventer tackles many of the toughest weeds a gardener faces, including: dandelions, crabgrass, field bindweed, white clover, chickweed, henbit, purslane, Carolina geranium, stinging nettle, horseweed or marestail, oxalis, spurge, lambsquarters and more.

Preen’s jug-handled bottle with a flip-top applicator cap makes Preen Extended Control Weed Preventer easy to apply. Simply flip open the top, tilt the bottle and start shaking it to evenly distribute the product granules on top of soil or mulch. Water in the treated area to activate the protective weed barrier. That’s all it takes to stop listed grassy and broadleaf weeds for up to six months.

Best of all, by applying Preen Extended Control Weed Preventer just 2 times per year you can get year-round protection from new weeds. No weeds means no time wasted 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:

Preen Extended Control Weed Preventer is not a weed killer ‚Äď it stops new weeds from sprouting. First remove any existing weeds that may be growing. Then apply Preen Extended Control Weed Preventer using the easy-to-use bottle with flip-top applicator-cap. Sprinkle the product granules on top of the soil or mulch at the rate recommended on the label. Once the product is activated by watering, it forms an invisible weed control barrier in the top layer of soil (1 ‚Äď 3 inches), preventing new weeds from growing. If it‚Äôs not possible to water in the product right away, and no rain falls within two days, use a rake to work the product into the soil or mulch.

When to Apply:

Preen Extended Control Weed Preventer can be applied up to two times per year around established plants and transplants. A first application can be made any time throughout the growing season — spring, summer or fall. For ongoing weed-protection, a second seasonal application can be made two to six months after the first application.

When planting or transplanting into an area treated within the past 12 months, use fresh soil as fill in planting holes. Disturbing the soil surface after activation may result in erratic weed control.

Applying Around Established and Transplanted Plants:

When used as directed, the product can be used around more than 600 listed perennials, groundcovers, shrubs and trees. For the full list, see product label. To apply around established perennials, ground covers, shrubs and trees: sprinkle Preen Extended Control Weed Preventer evenly over the entire soil surface, at the rate of .98 oz per 10 sq ft. Keep the granules away from plant roots and foliage. Always brush off or wash off stray weed preventer granules from plant foliage to avoid leaf damage or discoloration. If it is not convenient to water-in quickly and rain is not expected within two days, lightly rake the granules into the top layer of soil or mulch.

Applying with Mulch:

For best weed control, we recommend applying Preen Extended Control Weed Preventer after spreading mulch on your perennial flower, shrub and landscape beds. Sprinkle Preen on top of the mulch at the same rate as recommended for application directly to soil.

Not for Use With:

This product should not be used on flower seeds, lawns, vegetable gardens or water gardens. It also is not for use around food-producing or edible plants, including herbs and fruit-bearing nut or fruit trees, or around a short list of plants which are sensitive to Preen Extended Control Weed Preventer (see list on label).

Weeds Controlled


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