Why Does My Lawn Have Thick Patches of Grass

thick patchy grass

A well-manicured lawn or landscape is a source of pride for many homeowners so it can be frustrating to see thick patches of grass or darker grass marring an otherwise pristine sight.

The question then is what is causing the patches or darker spots and how can they be managed or removed.

This article will discuss the most common reasons for imperfections to appear in your lawn along with ways to prevent or clear them up.

Wrong Grass, Wrong Place

A common problem is a different species of grass growing in patches in the lawn. Some grasses do not mix well with other grasses.

Bentgrass is common on golf courses because it grows low and thick. If it gets into your lawn, it is quite an aggressive grower and can take over or crowd out your original grass thus creating unsightly patches.

Tall Fescue can be another problematic grass. It was originally a pasture grass, therefore it often grows much taller than the surrounding grass.

Zoysia is another grass that can invade a lawn and create patches. It is very difficult to get rid of because of the way it roots and it is extremely heat and drought-tolerant.

Depending on how much of your lawn is overrun by these types of different grasses it may be as simple as digging up each patch and then placing sod or overseeding the area.

If it is a larger area you probably need to contact a professional lawn care company to help spray the affected area and kill the different species of grass before laying new sod or overseeding the entire area.

One way to prevent a different thick patches of grass from invading is to focus on consistent lawn care like watering, fertilizing, and mowing.

Clumpy Weeds

Crabgrass is a very problematic invader. It is fast growing and produces thousands of seeds that spread quite a distance.

Crabgrass stands out as well because it is a lighter color than the surrounding grass.

Since it is such an aggressive grower, it is best to prevent Crabgrass as early as possible and dig it up along with as much of the root as you can.

It’s crucial to re-seed the area or lay sod so that new weeds don’t grow right back.

If the Crabgrass has already become established, it’s necessary to spray it with an herbicide to prevent it from taking over the entire lawn.

Broken Sprinklers

A broken sprinkler can cause thick patches of grass to grow quicker or darker because of the excess water. It can be difficult to detect a leak, especially if the system is automated.

A sprinkler head leak is usually easy to fix by digging out the sprinkler head, shutting off the water, and then replacing the broken sprinkler head with a new one.

If the leak is in the line it can be harder to pinpoint, but once found is a fairly routine fix although more intensive depending on the size of the piping used.

Fixing the leak will not only help with the patchy grass but will also lower water consumption. If you are unsure of when and how to water your grass, our lawn watering guide will help you find out when is the best time to water your specific type of grass. 

Inconsistent Fertilizer

Every lawn needs nutrients, but sometimes a proliferation of nutrients in a smaller area can cause patchy results.

For instance, a dog that goes to the bathroom on the lawn could result in that area growing faster and creating a clump of thicker, taller grass. A simple solution is to take the dog out just before the sprinklers come on or to water the area with a hose yourself.

This will dilute the dog urine and spread the fertilizer over a larger area. Organic materials like leaves or branches that are decomposing might also make areas of grass thicker.

The solution is to fertilize the entire lawn and make sure it is getting adequate water early in the day.

This will cause the entire lawn to be thicker and greener. A preventative measure would be to pick up any debris and move it to a compost area.

Lawn Experts at Gecko Green

There are several reasons why your grass might be patchy. Some of them have a simple or easy solution, while others require more professional help.

The easiest solutions are often to notice the weeds, invading grass, or excess water early and take quick preventative actions before they have a chance to spread widely.

The lawn experts at Gecko Green know how to identify any issues with your lawn and can tackle it before it takes over your lawn. Gecko Green offers a free lawn care quote and can help your lawn look its best!

Call for a free quote today!