Dollar weed, also known as pennywort, is a creeping weed with flat, silver dollar-sized leaves that tends to grow in areas with especially damp soil. This pesky weed can crowd out turfgrasses and other plants in an area, and should be treated wherever it might be spotted. Learn how to get rid of dollarweed with this guide.
Improve Lawn Conditions
Dollarweed loves water. An important step in controlling dollarweed on your property is to remove the excess moisture in your lawn.
Assess your lawn's drainage after storms. Does water pool in one area? That area may need to be addressed with landscaping or drainage improvements to prevent water build-up.
Take care to not overwater when using a sprinkler. Use the sprinkler in the morning to allow the water to dry during the day. This will help prevent weeds like dollarweed and combat lawn fungus, which also grows in moist conditions.
See our lawn care schedules for detailed information on how to maintain your lawn year-round for optimal health.
Use a Post-Emergent Herbicide
Once you have improved the conditions in your lawn, use a post-emergent herbicide on any existing dollarweed plants present.
Selective post-emergent herbicides labeled for use against dollarweed or pennywort will target these weeds specifically and bring them under control. More than one application may be required for complete weed control. Products with the active ingredients 2,4-D and Dicamba are recommended for dollarweed treatments. Each active ingredient is labeled for use on certain grasses. Be sure that any herbicide you select is labeled for use on your turf type to avoid lawn injury.
Pro Tip
Herbicides with the active ingredients 2,4-D and Dicamba can be used safely on bermudagrass, centipedegrass, tall fescue, St. Augustinegrass, and zoysiagrass.
When you've chosen the herbicide that matches your turf type and target weed, prepare the mixture with water in a handheld pump sprayer. Always wear appropriate PPE including chemical-resistant gloves, long sleeves and pants, socks, and closed-toe shoes while mixing and applying any herbicide.
Follow all labeled directions for specific mix rates and application instructions. Seal and shake the sprayer tank before applying for ensure a thorough mix.
Pro Tip
Dollarweed plants can live entirely in bodies of water. When treating these weeds in or around water, be sure to select an herbicide labeled for aquatic application, such as Reward Landscape and Aquatic Herbicide.
Products needed for Step 2
Once you have contained the Dollarweed plants you found, you can take steps to prevent new weeds from forming. Learn how in our Dollarweed Prevention Guide.