Choosing the best post emergent weed killer for zoysia is essential if you want a pristine, weed-free lawn without damaging your grass. Zoysia is a resilient warm-season turfgrass, but it’s still vulnerable to stubborn intruders like crabgrass, dollarweed, clover, and spurge.
Many homeowners struggle to find a weed control product that eliminates unwanted growth while being gentle on their zoysia lawns.
Whether you’re dealing with broadleaf invaders or grassy weeds, using the right post emergent solution can make or break your lawn care strategy.
This article solves that problem by reviewing 10 top-rated post emergent herbicides specifically suited for zoysia grass. Let’s dive into the most reliable broadleaf weed killers and spot treatments available today for zoysia lawns.
Top 10 Best Post Emergent Weed Killers for Zoysia
1. 2,4‑D Amine Herbicide
2,4‑D Amine Herbicide targets broadleaf weeds like clover and oxalis while sparing zoysia grass. It disrupts weed growth hormones, causing the plants to wilt and die. Always wear protective gear during application.
Apply when weeds are young and actively growing for best control. Spot application prevents damage to surrounding grass. Multiple treatments may be necessary for persistent weeds.
Cost‑effective and widely available for homeowners. Its selective nature suits warm‑season lawns. Follow all label instructions carefully.
2. Quinclorac Crabgrass Control
Quinclorac specifically targets crabgrass, dollarweed, and certain other grassy weeds in zoysia lawns. It inhibits weed growth while allowing zoysia to thrive. Ideal for use in late spring through summer.
Apply when weeds are small for optimal results. Protective clothing is recommended during spraying. Repeat applications may improve effectiveness.
Often paired with surfactants for better uptake. Safe for regular lawn care when used as directed. Always follow product label guidelines.
3. Trimec Southern Lawn Weed Killer
Trimec Southern is a blend of 2,4‑D, dicamba, and MCPP formulated for southern grasses like zoysia. It treats broadleaf weeds such as dollarweed, clover, and oxalis with precision. Spot application offers targeted control.
Works best when weeds are in early growth stages. Use protective gear during application. Some weeds may require multiple treatments.
Visible results usually appear within days. It is safe for zoysia when used correctly. Follow all label directions for safety.
4. Metsulfuron‑Methyl Broadleaf Spot Spray
Metsulfuron‑methyl controls clover, oxalis, and other broadleaf weeds in zoysia with minimal turf injury. It disrupts cell division in weeds, leading to death. Applied as a spot treatment during warm months.
Wear protective clothing during use. It works best on actively growing weeds. Coverage quality affects results.
Provides residual control to prevent regrowth. Often included in lawn spot weed programs. Always adhere to label instructions.
5. Triclopyr Southern Brush & Weed Killer
Triclopyr selectively targets woody and broadleaf weeds without harming zoysia turf. Useful for dandelions, creeping oxalis, and other tough weeds. Apply directly to foliage or stems.
Apply during calm weather and wear protective clothing. Results show best effect on actively growing plants. Repeat treatment may be required for dense patches.
Safe for sensitive lawns when used as directed. Provides root control through systemic action. Always follow product label guidelines.
6. Quinclorac + Sulfentrazone Combo Spot Treatment
This hit‑hard combination controls both crabgrass and broadleaf weeds in zoysia. Works on spurge, sedge, and other tough targets. Ideal for late season spot spraying.
Apply directly to weeds and wear protective gear. Efficacy improves with proper timing. Repeat as needed for stubborn weeds.
Often used after mowing for best contact. Delivers quick visible results. Follow label instructions precisely.
7. Imazapic Pre/Post Emergent Spray
Imazapic controls both grassy weeds like crabgrass and broadleaf intruders such as clover. It inhibits key enzyme functions in weeds while sparing zoysia. Works as an early spring or summer treatment.
Apply to moist foliage or soon after mowing. Protective clothing is required. Reapplication may be necessary in warm zones.
Provides residual activity for ongoing control. Common in integrated zoysia care programs. Always read and follow label directions.
8. Pelargonic Acid Organic Spot Burner
Pelargonic acid contact spray burns weed foliage upon contact without harming zoysia roots. It’s an organic choice suited for homeowners seeking natural alternatives. Best used on small, tender weed shoots.
Requires repeat application since roots survive. Protective gear is advised during application. Ideal for organic turf management.
Breaks down quickly in the environment. Shows visible results rapidly. Combine with other methods for effective control.
9. Vinegar (Acetic Acid) Turf Spot Spray
Vinegar‑based spot spray burns foliage without long‑term turf damage and works well for small weeds in zoysia. It does not kill roots but offers immediate results. Perfect for targeted use.
Repeat application may be needed for total weed elimination. Protective clothing is recommended during use. Works best under sunny, warm conditions.
Safe and organic for lawn care. Shows visible effects within hours. Combine with spot removal for enhanced control.
10. Manual Removal Plus Spot Herbicide Combo
Pulling weeds before applying post‑emergent herbicide ensures control at the root level. The combined method protects zoysia and reduces chemical usage. Always wear gloves and protective clothing.
Follow up with spot spray to treat remaining roots or seedlings. This strategy supports sustainable lawn management. Manual removal enhances weed control outcomes.
Reduces environmental impact by minimizing herbicide use. Best results come with consistent lawn maintenance. Persistence leads to a healthier, weed‑free lawn.
Buyer’s Tips for Choosing the Best Post Emergent Weed Killer for Zoysia
- Choose products labeled safe for zoysia turf.
- Apply when weeds are small and actively growing.
- Use spot treatments to limit impact on turf.
- Wear protective gear during herbicide use.
- Combine manual removal with spot spraying.
- Monitor treated areas weekly after application.
- Always follow label instructions for safety and results.
Best Post Emergent Weed Killer For Zoysia (FAQs)
- Is 2,4‑D safe for zoysia? Yes—when using products specifically labeled and applying spot treatments correctly.
- Will Quinclorac hurt my zoysia? No—quinclorac is designed for warm‑season turf like zoysia.
- Can vinegar kill weeds in my lawn? Yes—but only burns foliage and requires multiple applications.
- When should I apply post‑emergent herbicides? Spring through summer when weeds are actively growing.
- Should I mix manual removal and herbicides? Yes—it improves effectiveness and minimizes chemical use.
- Do I need surfactants for spot spraying? Often yes, depending on product instructions.
- How long after application should I monitor? Check weekly for at least 4 weeks to ensure control.
Conclusion
Post‑emergent spot treatments for zoysia offer effective weed control when used properly. Combining herbicide application with manual methods and maintenance nurtures healthy turf.
Products like 2,4‑D, Quinclorac, and Trimec Southern deliver reliable results. Safe practices, scheduled monitoring, and spot application support long‑term lawn health.
This integrated strategy ensures lush, weed‑free zoysia all season long.