10 Best Herbicide For Zoysia Grass 2026 in the United States

The Roundup Dual Action 365 Weed & Grass Killer Plus 12 Month Preventer Concentrate is a potent option for those needing long-term weed control. It is designed to act both as a post-emergent herbicide, killing existing weeds, and as a pre-emergent, preventing new weed growth for up to 12 months. This can be particularly beneficial for maintaining areas like driveways, walkways, and gravel paths, though it's not necessarily targeted for lawns, especially those with Zoysia grass, which might be too sensitive for such a strong formula.

The product is rainproof in just 30 minutes and shows visible results in a few hours, which is quite efficient. It provides coverage up to 1600 square feet with its 32-ounce concentrate, making it economical for large areas. However, its broad-spectrum nature means it isn't selective about what it kills, so careful application is crucial to avoid damaging desirable plants. It is user-friendly, with clear mixing instructions for spot treatment or even spraying.

The product's potency and long-lasting effect make it a robust choice, but it may be overkill for someone simply looking to maintain a Zoysia grass lawn. For such specific needs, a product designed particularly for lawns might be more suitable.

Spectracide Weed and Grass Killer is a post-emergent herbicide with the active ingredient Diquat Dibromide (0.12%), along with Fluazifop-p-butyl and Dicamba dimethylamine salt. This product is suitable for use on patios, walkways, and flower beds, making it versatile for various landscaping needs.

It offers visible results quickly, within as fast as 3 hours, and is rainfast in just 15 minutes, which is beneficial for unpredictable weather conditions. The container size is substantial at 1.33 gallons, providing extensive coverage with its liquid spray form. The inclusion of batteries for the sprayer is a convenient addition.

For Zoysia grass, users need to be cautious as this herbicide does not distinguish between weeds and desirable grass, potentially harming the Zoysia grass if applied directly. Its environmental impact and safety should also be considered, though it is designed to be effective and fast-acting. Users should carefully follow application instructions to avoid damaging their lawns.

The Ortho GroundClear Weed and Grass Killer2 Concentrate is a versatile herbicide designed to kill a wide range of weeds and grasses, including dandelions, chickweed, crabgrass, and moss. This product is a post-emergent herbicide, meaning it works on existing weeds rather than preventing new ones.

It contains ammonium nonanoate as the active ingredient and is fast-acting, offering visible results within just 15 minutes of application and becoming rainproof after 2 hours of drying. This makes it suitable for quick and effective weed control in areas like patios, landscapes, driveways, and walkways.

It is important to note that it should not be used on lawns or grasses you want to keep, such as zoysia grass, as it will kill them as well. The concentrate should be diluted according to label directions and applied to dry, actively growing weeds at any time of the year. Each 32 fl. oz. container can treat up to 600 square feet. The product is OMRI listed, making it compliant with organic standards, and has a good safety profile, though caution should be exercised to avoid contact with desirable plants. For those looking for a powerful and fast-acting weed killer for areas other than lawns, this product is a solid choice.