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 Scotts Halts Crabgrass & Grassy Weed Preventer is a pre-emergent herbicide designed to stop the germination of various lawn weeds, making it a good option if you want to prevent weeds from taking over your Zoysia grass. This product notably prevents crabgrass, foxtail, spurge, barnyardgrass, and other listed weeds if applied early in the spring, and it offers protection for the entire season.

You can also use it in the fall for different types of weeds. The granule form makes it easy to spread over your yard, covering up to 10,000 square feet, which is a generous amount for most residential lawns. It's designed to work in various weather conditions, including rain or snow, after application, ensuring that weather changes won't diminish its effectiveness.

However, it is not suitable for all grass types, specifically Dichondra or Bentgrass, so it is essential to confirm its compatibility with your lawn before using it. In essence, the Scotts Halts Crabgrass & Grassy Weed Preventer is a practical choice for maintaining a weed-free Zoysia grass lawn, provided you follow the application guidelines carefully.