10 Best Herbicide For Zoysia Grass 2025 in the United States

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.

The Compare-N-Save 75324 Herbicide is a post-emergent herbicide containing 41% glyphosate, effective for tackling existing weeds. It shows visible results within 2 to 4 days and is rainproof after 2 hours, making it a convenient option for quick and reliable weed control.

This product can cover over 25,000 square feet and can be diluted to make up to 85 gallons of ready-to-use spray, which makes it a cost-effective choice for large areas. However, it’s important to note that glyphosate is a non-selective herbicide, meaning it will kill most plants it comes into contact with, not just weeds. Therefore, careful application is necessary to avoid damaging desirable plants, including zoysia grass.

The product is relatively easy to apply using a spray method, but users should take precautions to follow safety guidelines due to the active ingredient's potential environmental and health impacts. It may not be suitable for those looking for a selective herbicide that targets only specific weeds.

The Ortho GroundClear Weed and Grass Killer2 Concentrate is a versatile herbicide designed to kill a wide range of weeds and grasses, including dandelions, chickweed, crabgrass, and moss. This product is a post-emergent herbicide, meaning it works on existing weeds rather than preventing new ones.

It contains ammonium nonanoate as the active ingredient and is fast-acting, offering visible results within just 15 minutes of application and becoming rainproof after 2 hours of drying. This makes it suitable for quick and effective weed control in areas like patios, landscapes, driveways, and walkways.

It is important to note that it should not be used on lawns or grasses you want to keep, such as zoysia grass, as it will kill them as well. The concentrate should be diluted according to label directions and applied to dry, actively growing weeds at any time of the year. Each 32 fl. oz. container can treat up to 600 square feet. The product is OMRI listed, making it compliant with organic standards, and has a good safety profile, though caution should be exercised to avoid contact with desirable plants. For those looking for a powerful and fast-acting weed killer for areas other than lawns, this product is a solid choice.