Choosing a weed killer that protects zoysia while effectively targeting broadleaf weeds is essential for maintaining a lush, healthy lawn. This guide reviews five reliable products suitable for zoysia, highlighting how they work, their application notes, and what to consider when selecting the right lawn herbicide for your yard.
Overview of Selected Products
- Ortho Weed B Gon Chickweed, Clover & Oxalis Killer for Lawns Concentrate
- Southern Ag Amine 2,4-D WEED KILLER, 32oz
- Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer with Sure Shot Wand
- Ortho WeedClear Lawn Weed Killer Ready-To-Spray
- BioAdvanced All-In-One Lawn Weed and Crabgrass Killer I, Concentrate
The table below offers a quick reference to each product’s focus and suitability for zoysia, helping you compare at a glance.
| Product | Active Focus | Best For | Notes for Zoysia |
|---|---|---|---|
| Ortho Weed B Gon Chickweed, Clover & Oxalis Killer for Lawns | Broadleaf weeds incl. chickweed, clover, oxalis | Weeds grouped by broadleaf species | Kills to roots; safe for many grasses when used as directed |
| Southern Ag Amine 2,4-D WEED KILLER | Broadleaf weeds, woody plants | Economical broadleaf control | Low rate per acre; compatible with turf areas |
| Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer | Kills existing weeds; prevents new weeds | Weed control with long prevention period | Effective in cracks, drives, and landscapes; rainfast quickly |
| Ortho WeedClear Lawn Weed Killer Ready-To-Spray | Broadleaf and some grasses; thousand+ listed weeds | All-in-one lawn weed control | Kills listed weeds down to the root; safe for zoysia when used as directed |
| BioAdvanced All-In-One Lawn Weed and Crabgrass Killer I | Broadleaf weeds and crabgrass | All-in-one weed and crabgrass control | Concentrate formula; targets tough weeds; lawn-friendly when applied properly |
Ortho Weed B Gon Chickweed, Clover & Oxalis Killer for Lawns

Ortho Weed B Gon is formulated to kill tough weeds such as chickweed, clover, creeping Charlie, oxalis, and wild violet. The product is designed to travel from leaf to root, aiming to eliminate listed broadleaf weeds while protecting common lawn grasses when used as directed. It is noted for use on many turf types including zoysia, fescues, Kentucky bluegrass, and ryegrass, making it a versatile option for mixed lawns. Always follow label directions to minimize any risk to desirable grasses.
Southern Ag Amine 2,4-D WEED KILLER

Southern Ag Amine 2,4-D is a broadleaf weed killer that provides economical control with a relatively low use rate. It targets many broadleaf weeds and can be used in turf areas such as lawns, pastures, and ditch banks. This option is often selected for larger properties or maintenance programs where budget-friendly weed management is prioritized. For zoysia and other warm-season grasses, ensure proper dilution and application according to the label to protect desirable grasses.
Roundup Dual Action Weed & Grass Killer Plus 4 Month Preventer

This Roundup formula delivers dual action by killing existing weeds and preventing new ones for up to four months. It works quickly, with visible results in hours, and is suitable for use on hardscapes, driveways, sidewalks, and landscape cracks. When applying around lawns containing zoysia, follow the label guidance for lawn-safe areas and avoid overspray onto desirable turf to prevent damage.
Ortho WeedClear Lawn Weed Killer Ready-To-Spray

Ortho WeedClear Ready-To-Spray is designed for convenience and speed, delivering fast-acting control of listed weeds including dandelion, chickweed, clover, and crabgrass. The product is formulated to broadcast over lawns and is noted for being safe for most grasses, including zoysia, when used as directed. Its ready-to-spray format makes it a practical option for quick weed management without measuring concentrates.
BioAdvanced All-In-One Lawn Weed and Crabgrass Killer I

BioAdvanced All-In-One combines broadleaf weed control with crabgrass management in a single concentrate. This product targets tough weeds at the root and is designed to protect established turf when used according to the label. It provides a robust option for homeowners seeking integrated weed control without multiple products.
Buying Guide: Key Purchase Considerations
- Weed spectrum: Identify whether you need broadleaf weed control, crabgrass, or a combination. Some products target a wide list of weeds, while others are specialized.
- Grass compatibility: Check that the product is safe for zoysia and other grasses in your lawn. Always confirm label directions to minimize risk to desirable turf.
- Application form: Ready-to-spray vs. concentrate. Ready-to-use formulas are convenient for quick applications, while concentrates may offer cost efficiency for larger areas.
- Seasonality and timing: Some products are effective when weeds are actively growing; others provide long-lasting prevention. Plan applications around your local growing season.
- Sunlight and weather: Avoid applying during extreme heat or drought, and never treat wet foliage. Rainfast times vary by product and label.
- Environmental impact: Consider products with selective formulations to minimize impact on non-target plants and pollinators where possible.
- Storage and safety: Follow storage guidelines and keep out of reach of children and pets. Use protective gear as recommended by the label.
- Re-entry interval: Note how long you should keep pets and people off treated areas after application.
When selecting a weed killer for zoysia, prioritize products proven safe for warm-season grasses and designed to minimize harm to established turf. Reading and following the label is essential to achieve optimal results and maintain lawn health.