Best Weed Killers for Zoysia Grass: Products and Safe-Use Tips
The best way to kill weeds in zoysia grass is to use a selective herbicide whose label specifically permits application to zoysia, then follow its directions exactly. Ortho WeedClear and Spectracide Weed Stop are options to compare for lawn weeds, while Southern Ag 2,4-D targets broadleaf weeds and woody plants. Scotts Liquid Turf Builder combines weed control with fertilizer. Natural Armor is nonselective, so reserve it for places where you do not want any vegetation—not for spraying across zoysia.
| Product | Best suited for | Key consideration |
|---|---|---|
| Ortho WeedClear | Targeted lawn-weed application | Confirm zoysia is listed on the label |
| Spectracide Weed Stop | Listed weeds, including crabgrass | Check grass-type restrictions |
| Southern Ag 2,4-D | Broadleaf weeds and woody plants | Follow turf-use directions and rate |
| Scotts Liquid Turf Builder | Broadleaf weeds plus nitrogen | Confirm zoysia suitability before use |
| Natural Armor | Weeds on non-lawn areas | Nonselective; can kill zoysia |
Ortho WeedClear With Comfort Wand
Ortho WeedClear is best for homeowners who want to spot-treat lawn weeds with a ready applicator rather than mix a concentrate. The listed formula contains three weed-control ingredients and is described as targeting common lawn weeds, with visible results in hours when used as directed. Its continuous-spray Comfort Wand is designed for controlled application without pumping.
It was selected for convenient, targeted lawn treatment, but “lawn friendly” does not guarantee safety for every grass species. Check the current product label for zoysia approval and application restrictions before spraying. Avoid using it if zoysia is not specifically permitted on the label.
Spectracide Weed Stop Plus Crabgrass Killer
This concentrate is best for buyers whose target weeds include crabgrass as well as listed broadleaf and grassy weeds. The product information says it controls more than 470 types of listed weeds, including crabgrass, dandelion, chickweed, clover, and yellow nutsedge. It recommends applying when crabgrass first appears.
It was selected because it addresses several common lawn weed types in one product. Its limitation is that the product’s lawn-use claim is conditional on following directions, and the full weed list and grass restrictions matter. Read the label to verify zoysia is an approved turf type and confirm the target weed is listed before use.
Southern Ag Amine 2,4-D Weed Killer
Southern Ag Amine 2,4-D is best for buyers targeting broadleaf weeds or woody plants where the label allows its use. Listed directions describe a low application rate of 1 to 4 pints per acre and use in turf, pastures, rangeland, ditch banks, and fence areas. This makes it a candidate for comparing against other broadleaf herbicides.
It was selected for its broadleaf and woody-plant target profile. It is not a general-purpose cure for grassy weeds, and product data alone does not establish that every zoysia lawn can tolerate it. Check the label for zoysia-specific directions, rate, and timing; do not estimate a lawn dose from an acreage rate.
Scotts Liquid Turf Builder With Plus 2
Scotts Liquid Turf Builder is best for a buyer seeking a hose-end application that combines a nitrogen boost with control of listed broadleaf weeds. The supplied features name weeds such as chickweed, ground ivy, henbit, oxalis, plantain, ragweed, and spurge. The product instructions recommend applying while weeds are actively growing.
It was selected for buyers who want fertilizer and weed control in one application. Because the product targets particular weeds and contains a lawn herbicide, it should not be treated as safe for all grass types. Confirm zoysia is listed on the label and follow the application directions; choose another product if the target weed or turf type is excluded.
Natural Armor Weed And Grass Killer
Natural Armor is best for weeds growing in places where no plants are wanted, such as driveways, gravel, patios, paths, and fence lines. The listed product is ready to use and is described as nonselective and free of glyphosate. That means it is not a suitable blanket spray for a zoysia lawn: it can damage or kill desirable grass as well as weeds.
It was included as a useful comparison for hardscape and edging weeds, not as a selective lawn treatment. Avoid spraying it on zoysia or where spray drift could reach the turf. Use only in the locations and manner allowed by its label.
Buying Guide: How To Choose A Zoysia-Safe Weed Killer
Does the label specifically allow use on zoysia?
Start with the turf-type list on the product label. A product described as safe for lawns may still restrict use on particular grasses. If zoysia is not named or the directions are unclear, do not assume the herbicide is suitable. The label also provides the allowed application rate, timing, and precautions.
What kind of weed are you treating?
Identify whether the weed is broadleaf, grassy, or sedge-like before choosing a product. A broadleaf herbicide may not control crabgrass, while a product listing crabgrass may not control every weed in the yard. Match the weed to the label’s control list rather than relying on broad claims.
Should you use a selective or nonselective product?
Selective lawn herbicides are intended to control certain weeds while preserving approved turf when applied as directed. Nonselective products such as Natural Armor are meant for areas where vegetation should not grow. Keep nonselective sprays off zoysia, nearby plants, and other desirable vegetation.
How can you reduce risk to the lawn?
- Apply only at the label rate and under the conditions stated on the label.
- Use targeted application where practical instead of treating the whole lawn unnecessarily.
- Prevent spray drift and avoid applying to stressed or otherwise restricted turf.
- Follow label instructions for watering, mowing, protective equipment, and keeping people or pets away.
Frequently Asked Questions
Can I use any lawn weed killer on zoysia?
No. Use a product only when its current label permits application to zoysia and the target weed is listed.
Will 2,4-D kill weeds in zoysia?
2,4-D can target broadleaf weeds, but zoysia tolerance depends on the specific product directions and conditions. Verify the label before use.
Can I spray Natural Armor on weeds in my zoysia lawn?
No. It is a nonselective weed and grass killer, so it can harm zoysia. Reserve it for areas where no vegetation is wanted.
What should I use for crabgrass in zoysia?
Look for a product whose label lists both crabgrass and zoysia as approved for treatment, then follow its timing and use directions.
Is fertilizer-and-weed-control product suitable for zoysia?
Only if its label permits use on zoysia. A combined fertilizer and herbicide still has grass-type and application restrictions.