Tall Fescue in Home Lawns: What It Is and What to Do About It
Tall fescue is a common grass species that shows up in many home lawns across Minnesota and Wisconsin. While it is intentionally used in some parts of the country, including even in MInnesota and Wisconsin, it tends to stand out in cool season lawns that are primarily made up of Kentucky bluegrass and fine fescues.
For many homeowners, tall fescue becomes noticeable because it grows differently, looks different, and behaves differently than the surrounding turf. Understanding what it is and what your options are can help you decide how to manage it.
What is Tall Fescue and Why Is It in My Lawn?
Tall fescue is a coarse bladed grass that grows in clumps rather than spreading like Kentucky bluegrass. It has a wider blade, a more upright growth habit, and often appears darker green than the surrounding turf.
There are a few common ways tall fescue ends up in a lawn:
• It was included in the original seed or sod mix
• It was introduced through overseeding at some point
• It spread in from nearby areas such as roadsides or unmanaged spaces
In many cases, it has been there for years but becomes more noticeable during certain times of the season when growth differences are more pronounced.
How to Identify Tall Fescue
Tall fescue is often confused with other grassy weeds, but there are a few key traits that make it easier to identify:
• Wide, coarse blades
• Grows in clumps, patches
• Often remains more upright and can look uneven after mowing
One of the biggest indicators is the clumping growth habit. Unlike bluegrass, it will not fill in gaps, so it tends to create isolated patches throughout the lawn.
Now That You Have Tall Fescue: What Can You Do as a Homeowner?
There are a few practical options depending on how much tall fescue is present and how noticeable it is.
If there are only a few clumps, the most effective approach is physical removal. This can be done by digging out the clumps and then reseeding the area with a desirable grass type.
If tall fescue is more widespread, complete removal becomes more difficult. In these cases, many homeowners choose to either live with it. However, you can remove the existing lawn and replant.
Mowing regularly can help reduce how much it stands out.
Now That You Have Tall Fescue: What Can bioLawn Do?
Tall fescue is not something that can be selectively controlled. There are no treatments that will remove tall fescue without also impacting the surrounding desirable turf.
What we can do is overseed the lawn to increase the diversity and reduce how noticeable the tall fescue is in the lawn. Over the long run, overseeding will reduce how much the tall fescue spreads.
Preventing Tall Fescue as a Homeowner
Prevention comes down to maintaining a dense, healthy lawn and being mindful of what is introduced into it.
Using high quality seed blends that are appropriate for cool season lawns is important. Avoiding unknown or mixed seed sources can reduce the chance of introducing unwanted grasses.
Removing clumps of undesirable grass as soon as it is noticed will reduce the spread of these grasses in the lawn.
How bioLawn Helps Prevent Tall Fescue Issues
Our focus is on building a thick, healthy lawn that naturally resists unwanted grasses over time.
This includes:
• Balanced fertilization to promote consistent growth
• Encouraging density so there is less space for clumping grasses
• Overseeding with seed that has been tested to confirm it doesn’t have unwanted grassses such as tall fescue.
While we cannot prevent every instance of tall fescue from appearing, a well maintained lawn makes it much less noticeable and easier to manage.
Final Thoughts
Tall fescue is not necessarily harmful, but it often does not match the look and growth pattern most homeowners want in a cool season lawn. Because it grows in clumps and does not spread, it tends to stand out.
The key is deciding how much it bothers you. For some, removing a few clumps is enough. For others, it becomes part of the lawn.
If you are unsure what you are seeing, or want help determining the best approach, feel free to reach out. We are always happy to take a closer look and guide you in the right direction.