A Summer Annual Weed that Looks like Clover with a Yellow Flower

Weed Oxalis

What Is Oxalis?

Oxalis, also referred to as Yellow Wood Sorrel, is a Summer annual weed. As a Summer annual, it germinates sometime in the late Spring, grows well during the heat of Summer, then dies off with the cold weather. Oxalis is sometimes referred to as Yellow Clover because it looks like Clover but has a yellow flower.

Why Do You Have Oxalis?

A little Oxalis is normal. It is an annual and will fill in bare areas during the heat of Summer. A lot of Oxalis indicates that either you're mowing too short in the Spring and Summer, or that your lawn is just not thick or healthy enough to compete with the weed.

What Can You Do About Oxalis?

Since Oxalis has a short lifespan, the bulk of your effort should go into improving your lawn to prevent it next year. Here are a few things you can do to eliminate it right away.

  1. The first thing you can do is simply pick it. You don’t need to worry about getting all the roots, just get the main part of the plant.
  2. The second option is to use a spot chemical weed treatment, which will have some success but can also cause stress on the existing grasses, so it should be used sparingly.

How Do You Prevent Oxalis?

Oxalis and other annual weeds will emerge where your lawn is weak. It could be that you're mowing your lawn too short and keeping your lawn from competing. It could also be that the grasses you have are weaker and older and just don’t fight that well. If this is the case for you, a total Lawn Renovation might be the best choice. If you don’t want to go that far, simply Slice Seeding what you already have may really help.

Contact us to learn more or to get our opinion on what would be best for your situation.

How To Identify Oxalis In Your Lawn

  • Blooms In Summer
  • Fills In Bare Areas
  • Distinct Yellow Flower

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