Bentgrass in Home Lawns: What It Is and What You Can Do About It

Bentgrass is one of the more confusing grasses we see in home lawns. It looks soft, bright green, and healthy at first glance, but over time it tends to create uneven, patchy areas that stand out from the rest of your lawn.

While bentgrass has a place on golf courses, it behaves very differently in a typical home lawn setting.

What is Bentgrass?

Bentgrass is a cool season grass commonly used on golf course greens, tees, and fairways because it tolerates very low mowing and can create a dense, smooth surface.

In home lawns, it shows up as:

• Bright or lighter green patches
• Fine textured blades
• A puffy or fluffy appearance
• Areas that feel spongy underfoot
• Grass that pulls up easily due to shallow roots and matting

It spreads aggressively through creeping growth, which allows it to slowly take over sections of the lawn.

Why Bentgrass Becomes a Problem

Bentgrass is not inherently bad, it is just not well suited for typical lawn conditions.

Unlike Kentucky bluegrass or fescue, bentgrass:

• Requires very low mowing to stay healthy
• Needs frequent watering and intensive care
• Builds up thatch quickly
• Struggles in summer heat, often thinning or dying out

Because of this, it tends to look great in spring and fall, then decline during summer, leaving behind uneven patches.

It is also often introduced unintentionally through seed mixes, sod, or nearby turf areas, which is why it is very common to see in home lawns.

Now That You Have Bentgrass: What Can You Do as a Homeowner?

There are a few options depending on how much bentgrass is present and how much effort you want to put into it.

1. Leave it alone – Many homeowners choose to live with bentgrass, especially if it is scattered. It will change seasonally but is not harmful to the lawn overall.

2. Kill and renovate the area – Non selective herbicides will eliminate bentgrass completely, along with surrounding grass. After treatment, the area will need to be reseeded or sodded.

3. Dig it out – Remove the patch along with surrounding soil and roots. Replace with clean soil and reseed or sod.

4. Spot treat with herbicide – A product containing mesotrione can target bentgrass while minimizing damage to surrounding turf. It does cause surrounding turf to turn white and sometimes it does kill the surrounding turf. Once the bentgrass is controlled the area will need to be reseeded or sodded.

It is important to note that pulling bentgrass alone often makes it worse, since fragments left behind can regrow.

Now That You Have Bentgrass: What Can bioLawn Do?

At this time, bioLawn does not perform chemical treatments specifically to remove bentgrass.

However, we can:

• Help identify and confirm bentgrass in your lawn
• Provide treatment options if you want to maintain the bentgrass
• Provide guidance on the best removal approach for your situation

Preventing Bentgrass: What Can You Do as a Homeowner?

Prevention focuses on creating a lawn environment where desirable grasses outcompete bentgrass.

Key practices include:

• Mowing at a higher height, typically 3 to 4 inches
• Maintaining thick, dense turf through proper fertilization
• Watering deeply and infrequently rather than frequent light watering
• Overseeding thin areas regularly
• Avoid wearing golf shoes on your lawn

A dense, healthy lawn is your best defense against bentgrass spreading.

Preventing Bentgrass: What Can bioLawn Do?

Our approach to prevention focuses on overall lawn health.

We can:

• Build turf density through fertilization programs
• Improve soil conditions to support stronger root systems
• Provide overseeding recommendations or services
• Help manage watering and mowing practices

While we cannot prevent every instance of bentgrass, strengthening the lawn significantly reduces its ability to spread.

Final Thoughts

Bentgrass is very common in home lawns, especially in the Midwest. It often arrives without homeowners realizing it and becomes noticeable over time as it forms patches.

There is no quick or easy fix, but with the right approach, you can manage or remove it depending on your goals.

If you are unsure whether you are dealing with bentgrass or want help deciding on next steps, our team is always happy to take a look and guide you in the right direction.