10 Best Herbicide For Zoysia Grass 2026 in the United States

Roundup Weed and Grass Killer₄ is a post-emergent herbicide designed to kill a wide range of tough weeds and grasses, including dandelions, crabgrass, and clover. It acts quickly, with results visible within hours and becoming rainproof in about 30 minutes, which is handy if you need fast, reliable weed control. The product is applied using a Comfort Wand, which offers a continuous spray feature that makes application easier and reduces hand fatigue.

This product can be used around flower beds, trees, shrubs, and hard surfaces like driveways and walkways, but caution is needed if applying near desirable plants, including zoysia grass, as it is a broad-spectrum herbicide and can harm grass it contacts. It allows for planting new plants 1 to 30 days after treatment, depending on the situation, which is useful if you plan to reseed or overseed areas. The coverage of about 400 sq. ft. per 1.33 gallons is moderate, suitable for small to medium yards.

Roundup contains glyphosate, a potent chemical that has raised environmental and safety concerns; users should follow label instructions carefully to minimize risks. This product is effective for controlling weeds in zoysia grass but must be applied carefully to avoid damaging your grass, as it is not selective for zoysia. For targeted herbicide needs that safely preserve zoysia, herbicides specifically formulated for zoysia turf are recommended. Roundup Weed and Grass Killer₄ serves as a strong, fast-acting weed killer ideal for spot treatments around non-grass areas and hardscapes, but it is less suited for direct application on zoysia turf due to its non-selective nature.

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.

Roundup Dual Action 365 is a liquid herbicide designed to kill and prevent weeds and grasses for up to 12 months. It combines both weed-killing and pre-emergent properties, meaning it targets existing weeds and stops new ones from growing. It works on a broad range of tough weeds like clover, dandelions, crabgrass, and poison ivy. The product comes with a Pump 'N Go 2 Sprayer, which makes application easier and more precise, especially in hard-to-reach spots like cracks and gravel areas. It is rainproof in about 30 minutes and starts showing results within hours.

This herbicide is intended for use in non-lawn areas such as driveways, sidewalks, and patios, not directly on zoysia grass lawns. Using it on zoysia could damage or kill your grass because the active ingredients are strong and non-selective. For zoysia grass, a selective herbicide designed specifically for that grass type would be safer. The coverage is about 400 square feet per bottle, which is suitable for small to medium areas.

Highly rated by users for weed control effectiveness, this product's strong formula means it should be handled carefully and avoided on lawns or desirable plants. It is best for controlling weeds around zoysia grass rather than on it, thanks to its long-lasting prevention and convenient sprayer, although it may not be the safest choice if you want to protect your zoysia lawn itself.