Bermudagrass can indeed invade zoysia lawns and become a troublesome weed. It is a highly aggressive grass that spreads through both above-ground stolons and underground rhizomes. This means that it can quickly take over areas of your zoysia lawn if left unchecked.
I have personally encountered this issue in my own lawn. I had a beautiful zoysia lawn that bordered my neighbor’s yard, which unfortunately had a bermudagrass infestation. Over time, I started noticing bermudagrass encroaching into my lawn from the edges. It began as small patches, but eventually spread and became more difficult to control.
There are a few reasons why bermudagrass can invade zoysia lawns. Firstly, bermudagrass is a fast-growing and aggressive grass that can outcompete the slower-growing zoysia. It is also more tolerant of drought and heat, which gives it an advantage in certain climates. Additionally, bermudagrass can easily spread through its above-ground stolons and underground rhizomes, allowing it to quickly colonize new areas.
Controlling bermudagrass in a zoysia lawn can be challenging, but it is not impossible. Here are some methods that can help:
1. Regular mowing: Keeping your zoysia lawn mowed to the correct height can help prevent bermudagrass from establishing itself. Bermuda is typically mowed shorter than zoysia, so by maintaining a taller zoysia height, you can create a less favorable environment for bermudagrass to thrive.
2. Edging and barriers: Installing physical barriers, such as plastic or metal edging, along the border of your lawn can help prevent bermudagrass from spreading from neighboring areas. Regularly inspect the edges of your lawn and remove any bermudagrass that may be encroaching.
3. Spot-treating with herbicides: If you notice bermudagrass invading specific areas of your zoysia lawn, spot-treating with a selective herbicide can be effective. Look for herbicides specifically labeled for bermudagrass control in zoysia lawns and follow the instructions carefully.
4. Overseeding with zoysia: If the bermudagrass invasion is extensive and difficult to control, overseeding with more zoysia grass can help fill in bare spots and outcompete the bermudagrass. This will require preparation and proper care, but it can help restore the dominance of zoysia in your lawn.
It is important to note that controlling bermudagrass in a zoysia lawn may require ongoing maintenance and vigilance. Regularly inspect your lawn for any signs of bermudagrass and take prompt action to prevent its spread. Additionally, maintaining proper cultural practices, such as regular watering and fertilization, can help keep your zoysia lawn healthy and better able to resist bermudagrass invasion.
Bermudagrass can indeed invade zoysia lawns and become a problematic weed. However, with proper maintenance and control measures, you can help prevent and manage bermudagrass infestations in your zoysia lawn.
