Roundup Weed and Grass Killer Concentrate Plus is absorbed by the weed’s leaves. It moves through the weed to the root, stopping the function of an essential enzyme found in plants. Weeds die, roots and all – so they don’t grow back. Kills only what you spray. Any product not absorbed by the plant will be deactivated after it hits the soil. Weeds usually yellow and wilt within hours with complete kill in 1 to 2 weeks.
Can be used on patios, walkways, driveways, gravel, or mulch beds as well as around flowers, shrubs, trees, or along fences .
