10 Best Herbicide For Zoysia Grass 2025 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 Year Long Vegetation Killer1 is a powerful concentrate designed to kill weeds, grasses, and prevent new growth for up to a year. This product is a post-emergent herbicide, meaning it is used to kill existing vegetation rather than preventing new weeds. It contains a fast-acting formula that targets weeds at the root, which ensures long-lasting results. This can be particularly beneficial for areas where complete vegetation control is desired such as driveways, sidewalks, gravel areas, and other non-lawn spaces.

The effectiveness of this product is evident as it covers up to 3,200 sq. ft. with a 2-gallon container, making it a good choice for large areas. However, its application method requires mixing the concentrate with water and using a tank hose sprayer, which might be less convenient for users looking for a ready-to-use solution. Additionally, the powerful formula might not be suitable for all environments, especially if there are concerns about environmental impact and safety.

For zoysia grass, which is typically maintained as a desirable lawn, this product may be too aggressive since it is designed to kill all vegetation, not just weeds. Users should be cautious and ensure they are targeting unwanted vegetation and not their zoysia grass. This product is best suited for those needing total vegetation control in specific areas rather than selective weed control within a lawn.