10 Best Herbicide For Zoysia Grass 2025 in the United States

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 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.

Scotts Turf Builder Triple Action offers a convenient three-in-one solution for zoysia grass lawns by combining weed killing, crabgrass prevention, and fertilization in one product. It acts mainly as a pre-emergent herbicide to prevent crabgrass and other grassy weeds for up to four months, but it won't eradicate crabgrass that’s already growing. The active ingredients target common broadleaf weeds like dandelions, clover, and chickweed, which helps maintain a cleaner, healthier lawn. One of its strengths is the inclusion of fertilizer, which promotes thicker, greener grass alongside weed control.

Application is straightforward: spread the granules on a wet lawn using a Scotts spreader, then water after 24 hours. This process suits typical springtime lawn care routines when weeds are actively growing. It’s labeled safe for use on zoysia grass, as well as several other popular lawn types. However, the product is not sold in certain states and territories, which might limit accessibility for some users.

Since it’s a pre-emergent herbicide, those looking to remove existing crabgrass will need a separate solution. The granule form makes it easy to apply evenly, but the weight per package is light, so coverage is limited to about 4,000 square feet per bag. This product is well suited for homeowners seeking an all-in-one approach to prevent crabgrass, control broadleaf weeds, and feed their zoysia lawn, especially if they prefer a simple, seasonal treatment without multiple separate products.