Skip to main content
Customize by ZIP Code

User account menu

  • Help Center
Menu Search
Home Home
Roundup

Main Navigation (US)

  • Products

    • Landscape Weeds

    • Driveway & Patio Weeds

    • Lawn Weeds & Bugs

    • Poison Ivy & Tough Brush

    • Concentrates

    • Refills

  • Product Picker

  • Weeding Wisely

    • Learning the Basics

    • Using Products Properly

    • Specific Weeds

    • Learning the Basics

    • Using Products Properly

    • Specific Weeds

    • General Weeding

    • Landscape Projects

  • Help Center

    • Email Us

    • Site Map

    • Terms & Conditions

    • About Us

Search

FREE SHIPPING ON ORDERS $35 OR MORE

weeding wisely banner

Learning the Basics

What does Roundup® Landscape Weed Preventer Prevent?

If you’re ready to stop pulling weeds and start preventing them, Roundup® Landscape Weed Preventer puts a stop to over 40 types of grassy and broadleaf weeds.

Roundup® Landscape Weed Preventer sitting on a garden bed.

What does Roundup® Landscape Weed Preventer Prevent?

If you’re ready to stop pulling weeds and start preventing them, you’ve come to the right place. Roundup® Landscape Weed Preventer puts a stop to over 40 types of grassy and broadleaf weeds, so you can use your time for other, more enjoyable pursuits.

America's Least Wanted Weeds

Any of the weeds in your landscape beds can cause a headache, but these 6 suspects are among those most likely to pop up and ruin your day.

Clover growing in a lawn.

Clover

Recognizable by its 3-part leaves and round, white or pink flowers, clover can be found throughout the country. This perennial weed (meaning it comes back year after year) is a member of the legume family, so it feeds itself by producing its own nitrogen. If there’s a moist, undernourished area of your yard, chances are you’ll find clover there.

Foxtail growing in a lawn.

Foxtail

An annual grassy weed that sprouts in late spring, foxtail loves sunny spots and will quickly grow big enough to shade out some of the small plants in your landscape. The damage doesn’t end there, either: The roots of all 3 foxtail varieties (giant, green, and yellow) may also produce chemicals that can actually harm nearby plants.

Goosegrass growing in a lawn.

Goosegrass

Also called silver crabgrass, this annual grassy weed isn’t actually crabgrass at all. It starts to poke its head out of the ground in spring, but chances are you won’t notice it until summertime. At that point, you’ll start seeing silver- or white-centered rosettes of low-growing, flattened stems that can spread to be over 2 feet wide if you make the mistake of ignoring them.

Henbit growing in a lawn.

Henbit

As you might guess from the name, chickens love to eat this annual weed, which looks a lot like both dead nettle and ground ivy (a.k.a. Creeping Charlie). This invader has square stems, rounded leaves with scalloped edges, and small lavender flowers that bloom in the spring. You’ll often find it under trees and shrubs where other plants can’t quite get a foothold.

Lambsquarter growing in a lawn.

Lambsquarter

Though it’s edible when it’s young, common lambsquarter is a fast-growing annual weed that can cause much more trouble than it’s worth. Older plants are easy to spot, with leaves that are green on top and grayish-white underneath. A single plant has the unfortunate ability to produce thousands of seeds, so you need to make sure that doesn’t happen.

Purslane growing in a lawn.

Purslane

Like lambsquarter, you can eat purslane. While you’ll notice this annual weed starting to infiltrate your landscape beds in the summer, don’t be fooled into thinking a dry spell will wipe it out. Because it’s a succulent weed (meaning it stores water in its leaves), it can tough out periods of drought even while all of its plant neighbors are suffering.

And The Rest of The Naughty List

Roundup® Landscape Weed Preventer doesn’t just stop the weeds on the Most Wanted list, but can also halt a bunch of other broadleaf and grassy weeds, including:

  • Barnyardgrass
  • Bluegrass, annual
  • Crabgrass, large
  • Crabgrass, smooth
  • Crowfootgrass
  • Itchgrass
  • Johnsongrass (from seed)
  • Junglerice
  • Lovegrass (from seed)
  • Panicum, browntop
  • Panicum, Texas
  • Sandbur, field
  • Signalgrass
  • Sprangletop, Mexican
  • Sprangletop, red
  • Witchgrass
  • Woolly cupgrass
  • Lawn burweed
  • Carpetweed
  • Chickweed, common
  • Chickweed, mouseear
  • Hop Clover
  • Cudweed
  • Evening primrose
  • Fiddleneck
  • Filaree
  • Knotweed, prostrate
  • Kochia
  • Pigweed
  • Puncturevine
  • Pusley, Florida
  • Rocket, London
  • Shepherdspurse
  • Smartweed, Pennsylvania
  • Speedwell, corn
  • Spurge, annual
  • Spurge, prostrate
  • Woodsorrel, yellow
  • Velvetleaf (Buttonweed)
Bag of Roundup Weed Preventer
Roundup® Landscape Weed Preventer
Learn More
2021-01-21
2021-01-21
Roundup
85
77
/en-us/library/learning-basics/what-does-roundup-landscape-weed-preventer-prevent
https://www.roundup.com/sites/g/files/oydgjc121/files/styles/large/public/asset_images/080317_MW_1212_320x180.jpg?itok=j0V-i_jk

Social Media

  • Youtube

Footer menu

  • General Conditions of Use
  • Privacy Statement
  • Return Policy
  • Contact Us
  • Site Map
  • The Scotts Miracle-Gro Company
  • Investor Relations
  • Our Brands
  • Careers

The information on this site refers to Roundup® Weed & Grass Killer products and is for homeowner use. Always read and follow label directions.

*Consumer Guarantee: If for any reason you are not satisfied after using this product, simply send us original proof of purchase, and we will refund the purchase price.

Always read and follow label directions. Roundup, Roundup & design, FastAct, Roundup Extended Control and X design, Roundup® Precision Gel™, Pump 'N Go, Sure Shot and Draw the Line are trademarks of Monsanto Technology LLC. © 2020 Monsanto Company, worldwide rights reserved.