Problem Info

A weed with pale green leaves divided into three heart-shape leaflets invades thin areas of the lawn. The leaves are 1/4 to 3/4 inch wide and are similar to clover. Small, bright-yellow flowers are 1/2 inch long with five petals. Cucumber-shaped, light-green seedpods develop from the fading flowers. Plants may be 4 to 12 inches high. Oxalis, also called yellow woodsorrel or creeping woodsorrel, thrives in dry, open places but may also be a problem in moist, well-fertilized lawns. It often invades lawns that are beginning to thin from insect, disease, or maintenance problems.

Solution Advice

Check the soil pH level and follow recommended lawn care practices for a healthy, vigorous lawn. A healthy lawn helps smother the oxalis.

Product Recommendations

• Ortho® Weed-B-Gon® Chickweed, Clover and Oxalis Killer
• Ortho® Weed-B-Gon Weed Killer for Southern Lawns Ready-to-Use
• Ortho® Weed-B-Gon Weed Killer for Southern Lawns Ready-to-Spray
• Ortho® Weed-B-Gon Weed Killer for Southern Lawns Concentrate