How To Keep Zoysia Grass Out Of Flower Beds?

Are you looking for an effective way to keep zoysia grass out of your flower beds? Zoysia grass is a type of turfgrass that is often used in lawns and other landscaping projects. Unfortunately, it can also be a nuisance when it starts to take over your flower beds.

Fortunately, there are several preventative and removal strategies that can help you keep this invasive weed from taking over your garden. In this article, we will discuss the causes of zoysia grass infestation and provide tips on how to keep it out of your flower beds.

Why Zoysia Grass Can Be A Problem in Flower Beds?

Zoysia grass is a warm-season turfgrass that is popular for its drought tolerance and low maintenance. While it makes for an attractive lawn, it can become a problem in flower beds when left unchecked.

Zoysia’s creeping habits, combined with its tough roots, make it difficult to remove from garden beds or other areas of the yard. Its dense growth will quickly outcompete other plants, reducing the vibrancy of your garden as well as crowding out beneficial flowers and vegetables.

To prevent zoysia grass from invading your flower beds, there are a few steps you should take. First, keep your lawn healthy and vigorous by regularly mowing and fertilizing it. If you allow it to become weak or patchy, zoysia will begin to spread into nearby flower beds.

You should also water properly: neither too much nor too little. Too much water encourages the growth of zoysia while too little can cause it to become brittle and vulnerable to infestation.

Finally, create a physical barrier between the lawn and flower bed to prevent zoysia’s rhizomes from spreading into them. Plastic edging, rocks or gravel, or landscape fabric all offer effective barriers against invasive grasses like zoysia.

Causes of Zoysia Grass Infestation

Zoysia grass is an incredibly invasive and hardy species of grass that can quickly spread and take over both lawns and flower beds. Once it has become established, zoysia can be difficult to remove, which is why prevention is the best way to keep it out of your flower beds.

One of the main causes for zoysia grass infestation in flower beds is improper mowing around the edges of a lawn. For example, if you are mowing your lawn and not angling the blades away from borders like flower beds, then you are allowing clippings with viable seed heads to enter into these areas. These clippings can then start growing in the flower bed, spreading and taking over until it’s very hard to remove.

Another cause for zoysia grass infestation in flower beds is when stolons or rhizomes escape from a nearby lawn into neighboring areas such as flower beds or gardens. This occurs when these runners grow under a fence or walls where they can eventually reach soil in other areas and establish themselves. With this method, even if you have no seeds entering into these areas, zoysia can still find a way to get there.

Prevention Strategies

Preventing Zoysia grass infestation in flower beds is the best way to protect your plants and gardens from the damage this weed can cause. Taking proactive steps to create a strong barrier between your lawn and flower beds, along with regularly mowing, fertilizing and watering your lawn, can help prevent the spread of Zoysia grass into your flower beds.

Maintain a Healthy Lawn

Maintaining a healthy lawn is the best way to prevent zoysia grass from invading your flower beds. A healthy lawn will prevent weeds, including zoysia grass, from taking over. Proper maintenance of your lawn should include regular mowing, fertilizing, and watering.

Regular Mowing

Regular mowing is an essential step in keeping zoysia grass out of flower beds. Mowing the lawn regularly prevents zoysia grass from invading and overtaking flower beds. It also encourages healthy growth and keeps it looking neat and tidy.

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The frequency at which you should mow your lawn depends on the type of zoysia grass you have, but generally speaking, it should be done at least once a week during the growing season.

Zoysia grass grows relatively slowly compared to other types of grass, so it doesn’t need to be mowed as often as some other varieties. When you do mow, make sure that you don’t cut too much off at once; this can damage the turf and weaken its ability to resist invasive weeds like zoysia grass. Instead, gradually reduce the height of the lawn until it is about 1-2 inches short of its normal height.

Mowing correctly is just one part of a successful strategy for keeping zoysia grass out of your flower beds; however, by following these simple steps you can help ensure that your lawn stays healthy and free of unwanted weeds.


Fertilizing is an important part of lawn care that can help prevent zoysia grass from invading your flower beds. Applying a balanced fertilizer to your lawn will keep the grass healthy and help reduce its spread.

Be sure to read the label on any fertilizer you purchase and follow the instructions closely. You’ll want to choose a fertilizer that contains nitrogen, phosphorus, and potassium in equal amounts, as well as other essential micronutrients.

Applying too much or too little fertilizer can damage or even kill your lawn. It’s best to apply the fertilizer at least once or twice a year, depending on the type of grass you have and the weather conditions you experience in your area. Additionally, make sure to water your lawn after fertilizing to ensure that it is evenly distributed throughout the soil.


Watering is an important part of keeping zoysia grass out of flower beds. It’s important to water your lawn correctly and consistently to keep it healthy and prevent weeds from taking over.

Zoysia grass needs about 1 inch of water per week, so you should make sure that your lawn is getting enough moisture throughout the season. If you don’t water your lawn enough, you run the risk of letting zoysia grass get too dry and become stressed. This can lead to more weed growth in the flower bed, as well as a thinning or death of your grass.

It’s also important to avoid overwatering your lawn, as this can lead to unhealthy conditions that increase soil compaction and promote weed growth.

Overwatering can also cause fungal diseases like brown patch or rust to take hold in the zoysia grass, leaving it vulnerable to being overtaken by weeds. To ensure that you’re watering your lawn properly, check with a local nursery or landscaping service for advice on how much and how often you should be watering your zoysia grass.

Install a Physical Barrier Between the Lawn and Flower Bed

Installing a physical barrier between your lawn and flower bed is an effective way to keep zoysia grass out of the flower beds. This type of barrier helps prevent zoysia grass seeds from traveling through the air and taking root in the flower beds. It also keeps the roots of the zoysia grass from spreading into the flower beds, making it easier for you to maintain a healthy lawn.

This type of fabric is durable and long-lasting and can easily be tucked underneath existing plants or flowers for an added layer of protection against zoysia grass infiltration into your flower beds.

Installing any one (or combination) of these physical barriers will help ensure that zoysia grass does not invade your precious flower beds and ruin their beauty!

Plastic Edging

Plastic edging is an effective way to keep zoysia grass out of flower beds. By creating a physical barrier between the lawn and flower bed, this will restrict the spread of zoysia grass from the lawn into your flower beds. Plastic edging comes in many different sizes and shapes, so you can easily find one that fits your needs and budget.

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Installing plastic edging follows a simple process. First, mark where you want the edge to be with string or garden twine. Then dig a trench around the area that is slightly wider than the edging you’ve chosen.

Place the edging into the trench, making sure it’s level and secure it in place with stakes if necessary. Finally, fill in the remaining trenches with soil to help hold it in place.

An important factor to consider when selecting plastic edging is its durability; some types are more resistant to cracking or breaking than others depending on what type of material they’re made of.

Additionally, take into account how much maintenance will be required for your particular choice of edging; some need regular cleaning and trimming while others may require replacing after a few years due to wear and tear.

With all this information in mind, select an appropriate plastic edging that fits your needs and keep those pesky zoysia grass out of your flower beds!

Rocks or Gravel

Using rocks or gravel as a physical barrier between your lawn and flower bed is an effective way to protect the latter from zoysia grass. Rocks and gravel have properties that prevent the spread of zoysia grass, as they create a “no-go” zone where the grass cannot grow.

The size and type of rock used matters when creating this barrier. Smaller rocks are not ideal, as they can be shifted by wind or carried away by water runoff, allowing the zoysia grass to continue spreading into your flower bed.

Larger rocks, such as river stones or pebbles, work best since they remain in place and create a more effective buffer between your lawn and flower bed.

To create this physical barrier, simply line the edge of your flower bed with gravel or larger rocks at least 6 inches deep. Make sure to use gloves when handling them for protection from sharp edges or organic material that can cause skin irritation.

Additionally, check the composition of the gravel before using it – some kinds contain clay which will absorb moisture from your flowers’ roots leading to their eventual death.

Creating this physical barrier doesn’t just protect your flower beds from zoysia grass; it also adds an eye-catching aesthetic effect to your garden while helping keep weeds away too!

Landscape Fabric

Landscape fabric is a great way to keep zoysia grass out of flower beds. It is a thick, woven cloth that is placed between the lawn and the flower bed. The fabric helps to block any potential growth from spreading from the lawn into the flower bed, while still allowing water and nutrients to flow through.

Installing landscape fabric is relatively easy and cost-effective. First, you’ll want to measure out the area you’d like covered and purchase enough fabric for your project.

Once you have your material ready to go, spread it out over the desired area and secure it in place with a few staples or rocks. You can also use edging along the edges of your flower bed if needed for extra security.

Make sure that the fabric has no holes or tears before installing it, as this will allow zoysia grass to find its way into your flower bed. If you’re working with existing sod, make sure to remove all existing grass before laying down the landscape fabric in order for it to work properly.

Once installed, landscape fabric should last up to 10 years with proper care and maintenance. Make sure to keep an eye on it periodically for any signs of wear or damage so that you can replace it if necessary.

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With proper installation and maintenance, landscape fabric can be an effective way to keep zoysia grass out of your flower beds and ensure a beautiful garden all year long!

Removal Strategies

Removing zoysia grass from flower beds can be a challenging task. It is important to understand the different methods of removal, as well as prevention strategies to help reduce the likelihood of future infestations.

For smaller patches, spot treatment with an herbicide can also be effective. When applying herbicides, make sure to use caution and follow all directions listed on the product label for best results. It is also important to make sure that none of the herbicide gets onto desirable plants in order to avoid potential damage.

Hand Pulling

Hand pulling is a simple and cost-effective way to manually remove zoysia grass from flower beds. For best results, you should hand pull the grass before it goes to seed to prevent more infestations. Additionally, you should repeat this process several times throughout the growing season for continued success.

To hand pull zoysia grass, start by wearing protective gloves and use a trowel or other digging tool to loosen the soil around the base of each individual weed. Then grasp the weed at its base and gently pull it up from the ground. If any roots remain in the soil, carefully remove them with your trowel or digging tool as well. Finally, dispose of all pulled weeds in a sealed bag or container away from your garden so they do not reestablish themselves.

Spot Treating with Herbicides

Spot treating with herbicides is a great way to get rid of zoysia grass in flower beds. Herbicides are chemical compounds used to kill unwanted plants and weeds, but they can also be used to target a specific type of weed, like zoysia grass. When spot treating with herbicides, it’s important to choose an herbicide that is specifically designed for zoysia grass and follow the instructions carefully.

When spot treating, it’s important to apply the herbicide only on the zoysia grass and not on any other plants or flowers in the bed. To do this, you’ll need to identify the areas where there is zoysia grass before applying the herbicide.

Once you have identified those areas, you can use a spray bottle or a hand-held garden sprayer filled with the appropriate herbicide solution to treat only those areas affected by zoysia grass. Make sure that you cover all of the affected leaves and stems of the zoysia grass with the herbicide solution for maximum effectiveness.

It’s also important to keep in mind that most herbicides take several days or even weeks before they become effective in killing off unwanted plants like zoysia grass. Therefore, if you do not see any results after one application of an herbicide, don’t give up; reapply as recommended based on your product’s instructions until the results are visible.

Finally, when spot treating with an herbicide make sure to read and understand all instructions for proper application and safety protocols such as wearing protective clothing when handling chemicals; be sure to store unused solutions away from children and pets; and always observe local laws when using any type of pesticide or chemical weed control solution.


In summary, zoysia grass can be a nuisance in flower beds. To prevent it from encroaching on your flowers, maintain a healthy lawn by mowing it regularly, fertilizing and watering it appropriately, and installing a physical barrier between the lawn and the flower bed.

You can also remove zoysia grass through hand pulling or spot treating with herbicides. With proper prevention and removal strategies you can keep zoysia grass out of your flower beds.