Preen Extended Control Weed Preventer 13.75 lb - 6 Month Protection

In this review the Preen Extended Control Weed Preventer earns its place for gardeners who want a season-long reduction in seedling weeds without daily maintenance. One single application claims to block weed seeds for up to six months, making it a practical option for home flower beds, shrub borders and established perennial areas. The product includes an applicator scoop and covers about 2,245 sq. ft., so its main appeal is long-lasting prevention that saves time and cutting back on hand weeding.

Key Features

• Six-month control: A single application is formulated to prevent germination of many common broadleaf and grassy weeds for up to six months, reducing repeat treatments.
• Wide plant compatibility: When used as directed it can be applied around more than 600 perennials, groundcovers, shrubs and trees listed on the label, so it works in mixed planting beds.
• Coverage: The 13.75 lb. bag is stated to cover about 2,245 sq. ft., which is useful for moderate to large beds or multiple small areas.
• Included applicator scoop: The bag comes with a scoop to make spreading easier and more even across planting areas.
• Prevents seed germination: Formulated to stop weed seeds from sprouting so desirable plants are not crowded for water and nutrients.

Who It's For

This product is best for homeowners and gardeners who maintain flower beds, shrub borders or mulched perennial areas and want to reduce the routine chore of pulling seedlings through much of the growing season. It suits people who prefer a preventative strategy over spot-treating established weeds.

It is not intended for use on flower seeds, lawns, vegetable gardens, water gardens or other food-producing or edible plants, so those growing edibles or establishing new seeded flower beds should look for alternatives designed for those uses.

Pros & Cons

Pros

• Effective at preventing weed seed germination for months, saving time on hand weeding.
• Works around a wide range of established perennials, shrubs and groundcovers when directions are followed.
• The included applicator scoop improves spreadability and makes application straightforward.

Cons

• Not suitable for seeded flower beds, lawns or vegetable gardens, so it cannot be used everywhere in a landscape.
• Some users may find the price a little higher than basic preventers, though many report it lasts the season.

Specifications

Our Verdict

Preen Extended Control is a good value for gardeners who need reliable, season-long prevention of seedling weeds in existing beds and around established plants. Its long duration and broad compatibility with perennials and shrubs make it a genuine time-saver, though it should be avoided where seeds, lawns or edible plants are involved.

Frequently Asked Questions

How long does one application last?
When applied as directed a single application is formulated to last up to six months.

Can it be used near vegetables or seeded flowers?
No, it is not intended for use on flower seeds, lawns, vegetable gardens, water gardens or other food-producing or edible plants.

How much area does the 13.75 lb. bag cover?
The package states it covers about 2,245 sq. ft. and includes an applicator scoop for even spreading.