Water Pennywort

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Water pennywort is a native perennial, shoreline plant found throughout Mississippi. It spreads horizontally in mud or floats on the water surface. The leaves are nearly round with a scalloped margin. The stems, which may reach 10-12 inches long, are attached to the bottom of the leaves in the center of the leaves. Small white flowers appear in an umbrella shaped head that is borne on stalks as long as the leaf stalks. It flowers from May through September in Mississippi and reproduces both by seed and by vegetative means.

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Growth usually begins on shoreline mud and the plants gradually creep into open water. Mats sometimes break off to form floating islands. Water pennywort can sometimes create a significant nuisance, interfering with fishing and other water-related recreation. Either treatment listed will provide satisfactory control.

Special care was taken to make certain that all herbicide treatments are registered with the Environmental Protection Agency for use in the manner described. Registrations of specific practices are often changed or deleted; therefore, treatments suggested in this information sheet may not remain current indefinitely. Read and observe the manufacturer's label to prevent misuse of a herbicide. It is not intended or proposed that usage of any given practice suggested in this information sheet be in violation with existing registration or manufacturer's label.

If you fail to carefully read and follow suggested treatments, you could cause extensive damage to the environment, crops, livestock or humans.