What Is Nut Grass & How To Get Rid Of It

As a pool owner, you know that proper care and maintenance goes beyond the walls of your swimming pool. There are quite a few things that can damage your swimming pool from the outside, and one of them is nut grass. Dealing with nut grass invading your swimming pool is a recipe for headaches, frustration and expensive repairs. Let the experts at LinerWorld tell you what you need to know about pesky nut grass and how to prevent and eliminate it.

What Is Nut Grass
Nut grass, also known as nutsedge, is a stubborn common weed that makes its way into many lawns, especially those with wet, anaerobic soil. Its strong roots, referred to as “nuts”, make the weed difficult to eliminate. Unless you’re looking for nut grass, it can be difficult to find but there are a few ways to spot it. For example, the weed is generally a bit taller and lighter than the rest of your grass. In addition, it grows thicker than normal grass and will have stems of three or more blades of grass. Nut grass poses a problem for above ground pool owners because it can actually grow through your vinyl liner and ruin it.

Preventing Nut Grass
The easiest way to control nut grass is to stop it from growing before it starts. If you plan on installing an above ground pool or are replacing your liner, a good way to prevent nut grass growth is by spraying your pool area with chemicals. Once nut grass is established, it is very difficult to control and eliminate, so stopping the problem before it begins is your best bet.

Getting Rid of Existing Nut Grass
Not everyone is lucky enough to be able to stop nut grass before it begins to grow. Once you notice it growing by your pool or anywhere else in your yard, there are a few ways to stop it. Nut grass can’t be kept down with weed cloth or mulch because it will grow right through it and standard herbicides are only effective when the weed is really tiny. In addition, it can spread via underground rhizomes and by nuts the roots produce. Here are a few methods of eliminating nut grass:

  • Herbicide: As mentioned, herbicide will only be effective when the weed is young. After five leaves develop, the herbicide won’t be able to stop the spread of the nut grass. If the weeds are small, repeated application of herbicide can solve your nut grass problem.
  • The Sugar Method: It might sound silly, but sugar can get rid of nut grass, too. This remedy works best when the weed is very young and is just beginning to sprout. The first thing to do is hose down your yard to evenly moisten the soil. Next, evenly sift sugar over the grass as you walk up and down your yard in straight lines. Once the sugar is distributed, lightly mist your lawn with just enough water to move the sugar into the soil. Because the nut grass might not completely die off after the first treatment of sugar, be sure to repeat these steps two more times throughout the spring season.
  • Remove By Hand: This technique is exactly what it sounds like. You’ll need to find a pair of garden gloves, a trowel and start digging. The roots of nut grass can be as deep as 12 to 18 inches in the ground so be sure to go beyond breaking the surface. Pry the weeds and all roots out of the round gently to not break too many roots, as roots give the nut grass the chance to grow again. Put the dug up weeds, roots and soil in a garbage bag and put them in the trash to ensure there is no chance for them to grow again.

Nut grass is tricky to get rid of, so it’s important to prevent it from growing or take steps to get rid of it as soon as it begins to grow. If you have more questions about getting rid of nut grass growing by your pool, don’t hesitate to contact the experts at LinerWorld.