Best Weed Killer For Zoysia Grass- Best Pre and Post Emergent herbicide

When you're aiming for a lush, green lawn, knowing the best weed killer for zoysia grass lawns is crucial. This guide is designed to help you tackle unwanted grassy weeds, dandelion, and clover, ensuring your lawn stays as pristine as you envision. With the right approach, you can maintain a healthy zoysia lawn that's both inviting and resilient against common lawn weeds.

best weed killer for zoysia grass

Understanding Zoysia Grass and Its Weed Control Needs

Zoysia grass requires specific care during summer and winter to prevent weeds from sprouting. Understanding its growth pattern and needs will guide you in maintaining a weed-free lawn throughout the year.

1. Identifying Common Weeds in Zoysia Grass Lawns

In zoysia grass lawns, you'll often find grassy weeds along with dandelion and clover competing for space. Identifying these common invaders is the first step in taking targeted action to preserve the health and appearance of your lawn.

2. The Role of Lawn Maintenance in Preventing Weeds

Regular lawn maintenance is key in preventing the emergence of grassy weeds. A well-kept lawn can naturally resist the invasion of unwanted plants, making your weed control efforts more effective and less frequent.

Mowing Practices for Healthy Zoysia

Mowing your zoysia grass to the right height encourages dense growth, which can naturally deter weeds. Keeping your lawn well-trimmed but not too short is essential for its overall health and weed resistance.

Importance of Fertilization and Proper Watering

Applying fertilizer regularly and ensuring your lawn receives adequate water are critical steps in maintaining a vigorous zoysia lawn. A well-nourished and hydrated lawn is less likely to succumb to weed invasion.

Zoysia Grass Runners: Friend or Foe in Weed Control?


Zoysia grass runners can be both beneficial and challenging in weed control. While they help the lawn spread and fill in gaps, preventing summer and winter weeds from sprouting, they require monitoring to keep them in check.

1. Seasonal Weed Control Strategies for Zoysia Grass

Adapting your weed control strategies to the changing seasons ensures your zoysia lawn remains healthy and weed-free year-round. By understanding the seasonal needs of your lawn, you can effectively prevent and address weed issues as they arise.

January through April: Early Prevention Measures

Applying pre-emergent herbicides during these months can prevent weed seeds from germinating. This early prevention is crucial for maintaining a clean lawn throughout the year.

May Through August: Active Growth and Maintenance

This period of active growth is critical for your zoysia lawn. Applying herbicide carefully, keeping in mind that the turf is coming out of winter dormancy, requires using herbicides with caution as the turf regains strength.

September through December: Preparing for Dormancy

As your zoysia lawn prepares to enter dormancy, this is the time to address any lingering weeds and take steps to ensure a healthy return in spring. Preparing your lawn for dormancy involves careful weed management and maintenance.

Chemical Weed Control Solutions for Zoysia Grass

A tip for fighting off weeds in your zoysia lawn involves selecting the right chemical solutions. Understanding when and how to apply these can make a significant difference in maintaining a pristine lawn.

1. Top Pre-Emergent Weed Killers for Zoysia Lawns

For zoysia lawns, pre-emergent herbicides that target warm-season grasses can prevent weed seeds from sprouting. Choosing the right product is essential for effective weed control before the weeds emerge.

Pre-Emergent Herbicides


Barricade and Spartan

  • Usage: These pre-emergent herbicides are effective in preventing weed growth before it starts. They should be applied in early spring and fall to control annual weeds like crabgrass and goosegrass.
  • Application: Follow the manufacturer’s instructions carefully to ensure even application and avoid harming the Zoysia grass.


  • Usage: Another pre-emergent herbicide that can be used to prevent summer weeds. It is particularly effective when applied before the weeds germinate.
  • Application: Apply in early spring and again in late summer for best results

2. Effective Post-Emergent Herbicides for Zoysia Grass

For existing weeds, a combination of selective and non-selective herbicides can be used for targeted weed control. These solutions help manage a variety of weed issues without harming your zoysia grass.

Drexel MSMA 6 Plus: A Closer Look

Drexel MSMA 6 Plus is a powerful option for targeting broadleaf and grassy weeds, offering a solution that can help keep your zoysia lawn looking its best. Understanding its application and effectiveness is key to successful weed management.

Gowan Sedgehammer: Targeting Nuisance Sedges

When you're battling those stubborn, unwanted sedges in your Zoysia lawn, Gowan Sedgehammer is your go-to solution. Its targeted formula goes right to the heart of sedge weeds, disrupting their growth without harming your Zoysia grass. With proper application, Sedgehammer makes controlling these pesky weeds seem like a breeze, ensuring your lawn remains the lush, inviting space you love.

Organic post emergent herbicides for Zoysia lawns

Organic Post-Emergent Herbicides

Vinegar-Based Herbicides

  • Usage: Vinegar, particularly horticultural vinegar with a higher acetic acid concentration (20% or more), can be effective against many broadleaf weeds.
  • Application: Apply directly to the weeds on a sunny day. Be cautious as vinegar can also harm the grass if not applied carefully.

Corn Gluten Meal

  • Usage: While primarily a pre-emergent, corn gluten meal can also have some post-emergent effects on young weeds.
  • Application: Spread evenly over the lawn and water it in. It works best when applied before weeds have fully matured.

Clove Oil and Citric Acid

  • Usage: These ingredients are often found in organic herbicide formulations and can be effective against a variety of weeds.
  • Application: Follow the product instructions for mixing and application. These herbicides work by burning the foliage of the weeds.

Fatty Acid-Based Herbicides

  • Usage: Herbicides containing fatty acids (such as pelargonic acid) can be effective in controlling weeds.
  • Application: Apply directly to the weeds, ensuring thorough coverage. These products work by disrupting the cell membranes of the weeds.

More on organic weed killer

Highlighting Key Herbicides and Their Uses

Effective weed control in Zoysia lawns requires the right herbicides. From pre-emergents that prevent weed seeds from germinating to post-emergents that tackle existing problems, understanding the role each type plays can significantly enhance your lawn care routine. Knowing when and how to apply these can make the difference between a weed-free lawn and a problematic one.

1. Celsius WG Herbicide - Broadleaf and Grassy Weeds Control

Celsius WG Herbicide offers a powerful solution for controlling a wide range of broadleaf and grassy weeds without harming your Zoysia. Its versatility and effectiveness make it a preferred choice for homeowners seeking to maintain a pristine lawn. Ideal for warmer climates, Celsius WG works efficiently to keep your lawn looking its best throughout the growing season.

2. Drive XLR8 Crabgrass Killer Herbicide: Fast-Acting Solution

Drive XLR8 Crabgrass Killer Herbicide is recognized for its quick action against crabgrass and other invasive weeds. Its ability to deliver results rapidly helps restore the beauty and health of your Zoysia lawn with minimal downtime. Perfect for those seeking immediate improvement, Drive XLR8 ensures your grass stays vibrant and weed-free.

Combining with Pre-Emergents for Enhanced Effectiveness

Integrating pre-emergent herbicides with your chosen treatment can significantly boost your weed control efforts. This strategy prevents new weeds from taking root while you tackle the existing ones, offering a comprehensive approach to lawn care. By adopting this method, you ensure a stronger defense against weeds throughout the year.

Application Tips for Optimal Results

For the best outcome when applying herbicides, timing and precision are crucial. Ensure to follow label instructions closely for application rates and timing. Applying during optimal weather conditions, such as calm, dry days, can enhance the effectiveness of the herbicide, providing your Zoysia lawn with the protection it needs to thrive weed-free.

3. Target 6 Plus MSMA: Versatile Weed Management Tool

Target 6 Plus MSMA stands out as a versatile option for managing a broad spectrum of weeds in Zoysia grass. Its formulation is designed to target and eliminate weeds effectively while being safe for use on Zoysia, making it a reliable choice for maintaining a healthy, attractive lawn.

4. Speedzone Southern Herbicide EW: Specially Formulated for Southern Lawns

Speedzone Southern Herbicide EW is specially crafted to meet the unique needs of Southern lawns, including Zoysia. Its fast-acting formula tackles a wide range of broadleaf weeds, delivering visible results in hours. This makes Speedzone an essential tool for those seeking to maintain a lush, weed-free lawn in the South.

Yearly Maintenance Tips for a Weed-Free Zoysia Lawn

Maintaining a weed-free Zoysia lawn year-round demands a proactive approach to lawn care. From early pre-emergent applications to seasonal fertilization and proper mowing techniques, each step plays a critical role in preventing weed invasion. By following a structured maintenance schedule, you can enjoy a healthy, vibrant lawn throughout the year.

1. Spring Weed Control Tactics

Spring is a crucial time for pest control in your Zoysia lawn. Applying pre-emergent herbicides early in the season can prevent weed seeds from germinating, setting the stage for a lush, weed-free lawn. This proactive step ensures your Zoysia grass remains the star of your outdoor space without competition from unwanted weeds.

2. Summer Maintenance and Weed Prevention

Summer brings active growth for Zoysia grass, but also for weeds. Regular mowing and keeping an eye on irrigation can drastically reduce the chances for weeds to sprout. By adjusting watering and mowing practices to suit the season's demands, you support your lawn's health, making it less inviting for weeds.

Adjusting Watering and Mowing Practices

During summer, it's essential to adjust your watering and mowing practices. Water deeply but infrequently to encourage strong root growth, and mow at the correct height to prevent stress on your Zoysia grass. Removing seed heads and spreading bag up the grass clippings can further decrease the chances for weeds to sprout, ensuring your lawn stays lush and healthy.

Mid-Season Fertilization for Healthier Zoysia

Applying a mid-season fertilization provides your Zoysia lawn with the nutrients it needs to thrive. This timely boost helps strengthen the lawn against potential weed invasion and stress from summer heat. With the right fertilizer, your Zoysia grass remains robust, green, and better equipped to resist weeds, keeping your lawn looking its best.

3. Fall and Winter Preparations for Next Season's Success

As fall approaches, it's crucial to prepare your zoysia lawn for the colder months to ensure it thrives next spring. Begin by aerating your lawn to improve air, water, and nutrient flow to the roots. Then, apply a fall fertilizer that's high in potassium to strengthen the grass against cold and disease. Keep an eye on the weather and reduce watering as the growth slows down, but don't let the lawn go completely dry.

Removing leaves and debris is also important to prevent mold and diseases that can thrive under a wet, decaying layer. Finally, a final mow at the correct height will discourage pests and diseases while making sure your zoysia grass is not too stressed going into winter.

Wrapping Up: Achieving and Maintaining a Pristine Zoysia Lawn

Maintaining a lush, green Zoysia lawn that prevents over 200 lawn weeds isn't just a dream—it's an achievable goal with the right care and strategies. By choosing to plant Zoysia in shaded areas and addressing bare spots in your lawn, you're setting the stage for thick turf that naturally crowds out unwanted guests.

Regular applications of weed killers, tailored for winter weeds and annual winter challenges, ensure your lawn stays pristine. Remember, effective weed control starts with proper weed identification and continues through diligent care, including overseeding to fill any space in your grass’s canopy. With a commitment to maintenance every 8 to 10 weeks, especially against winter grassy invaders, your Zoysia lawn can remain a vibrant, weed-free haven year-round.