Dollarweed in Your Lawn? Fix the Conditions First

Confirm that the plant is dollarweed

Dollarweed produces round, coinlike leaves on upright stalks and spreads through creeping structures. One useful feature is that the leaf stalk attaches near the center of the leaf underside, creating an umbrella-like form. Dichondra also has rounded leaves but is generally kidney-shaped, with the stalk joining at the leaf margin. Use multiple features rather than one photo angle, especially after mowing has removed taller parts.

Photograph the plant, its growth pattern, stem attachment, flowers if present, and roots or creeping structures. Note whether it occurs in a single wet patch or throughout the property. UF/IFAS Extension can assist when the identification remains uncertain. Do not choose an herbicide based on the general appearance of a round leaf; a label naming dollarweed does not automatically cover another broadleaf plant.

• Look at where the leaf stalk joins the leaf.
• Compare whole-plant growth rather than one detached leaf.
• Photograph flowers, stems, and creeping structures when available.
• Map whether the patch corresponds with shade, runoff, or irrigation.
• Confirm the surrounding turfgrass species too.

Investigate why the area stays moist

Review recent rain and controller history before changing irrigation. Set straight-sided cans across the suspected zone, run it for 15 minutes, and compare the depths. A clogged or misaligned head can leave one area dry while another receives too much. Extending the whole zone for that dry patch expands the damp area dollarweed already favors. Also confirm that the rain shutoff works and that a shaded side yard is not programmed like full sun.

Trace water from outside the sprinkler system as well. Roof downspouts, pavement, air-conditioning drains, a leaking faucet, low grade, compacted fill, and a seeping valve can all concentrate moisture. If the patch remains wet for several rain-free days with irrigation off, the cause is not simply a frequent schedule. Persistent unexplained water, suspected plumbing or septic trouble, or drainage affecting structures and neighbors needs qualified evaluation.

Dollarweed can support a moisture hypothesis, but it does not identify the source. Verify the water path before changing the entire yard's schedule.

Correct water without drought-stressing the turf

Established turf should be watered when it shows drought signals such as folding blades, a blue-gray cast, or lingering footprints. Apply a measured root-zone irrigation, then wait for the signals to return. Suspend cycles after adequate rain and reduce watering in shaded areas as their demand requires. Repair leaks and distribution problems instead of merely shortening every zone by the same amount.

Do not swing from chronic saturation to a blanket watering shutdown during hot, dry weather. Turf weakened by shallow roots may wilt quickly when the schedule changes, so observe it closely and transition to need-based irrigation. If water runs off before the measured depth is delivered, investigate slope, application rate, compaction, and grade. Keep runoff and yard material away from streets, storm drains, ponds, and neighboring property.

Help the desirable grass occupy the space

Once moisture is under control, improve the conditions that support the lawn. Identify the grass and mow at its recommended height, removing no more than one-third of the blade. Scalping creates light and open soil for weeds, while mowing too infrequently adds another stress. Address traffic and verified compaction, and diagnose insects or disease that may have thinned the turf before dollarweed expanded.

Evaluate whether turf is a realistic fit. Deep shade and a chronically low drainage area may never support dense grass without excessive inputs. A suitable groundcover, rain-garden design, or mulched bed may perform better, but drainage routes and plant choices need site-specific planning. Do not add fertilizer simply to force density; color and thinness have several causes, and current labels and address-specific rules govern any application.

• Mow at the height for the identified turf species.
• Repair the original cause of thin or damaged grass.
• Reduce traffic while wet soil and roots recover.
• Use non-turf landscaping where shade or moisture makes grass unsuitable.
• Avoid unsupported fertilizer or lime applications.

If control remains necessary, follow the label

Small patches may be removed by hand when the creeping structures can be collected without spreading them, although regrowth is possible. For a pesticide decision, confirm dollarweed and the turf species, then read the current label completely. It must allow use on that lawn and site and must address the target. Temperature, turf stress, nearby ornamental roots, rain, irrigation, buffers, protective equipment, and reentry directions may all affect safe use.

The label is legally enforceable, and local requirements or applicator credentials may also apply. Do not increase a rate, combine products, or repeat an application to compensate for unresolved moisture. If the patch is extensive, identification is uncertain, or the lawn is already stressed, contact UF/IFAS Extension or an appropriately qualified professional. The long-term result still depends on correcting the conditions that let dollarweed outcompete the grass.

Chemical control is not prescribed here. Read the current label, verify turf and target, check local requirements, and use a properly credentialed applicator where required.