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.

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.

The Scotts Turf Builder Bonus S Southern Weed & Feed2 is a versatile herbicide and fertilizer combo designed specifically for Southern grass types, including Zoysiagrass. It excels at tackling a broad range of common weeds like dollarweed, clover, dandelion, and more, thanks to its active ingredient, Atrazine. This product not only kills existing weeds but also nourishes the lawn, promoting strong, deep roots that can better withstand Southern climate stressors.

Covering up to 5,000 square feet with a single 17.24-pound bag, it's a practical choice for medium to larger lawns. However, it's crucial to apply it to dry grass and water it in immediately, which could be seen as a bit inconvenient for some users. Additionally, it's limited to specific types of grass (St. Augustinegrass, Centipedegrass, Zoysiagrass, and Carpetgrass), making it unsuitable for lawns with different grass varieties. Importantly, as with many herbicides, there's an environmental consideration due to the use of Atrazine, which may have impacts on soil and surrounding plants if not used correctly.

This product is ideal for those with the specified grass types looking for a combined solution to weed control and lawn fertilization.