Violets are cool season perennial plants that bloom in the early spring. The plants have glossy heart shaped leaves and their flowers are a light blue to a deep purple. They prefer partial shade and are sometimes used as a ground cover but they can become a problem weed in some lawns.
A thick stand of grass will help prevent violets from getting established. A small patch can be dug up and disposed of. An application of a broadleaf herbicide can also be used to control them. A broadleaf herbicide application can be make in the in the spring or fall. Best control is in the fall because the plant will move the herbicide from the leaves to the roots, which can kill the plant. Check with your county Extension office, master gardener office or garden center for a broadleaf herbicide that can be used on violets. Be sure to read and follow the label directions before application.