Dollarweed Control in Centipede Grass on the Gulf Coast

Dollarweed (likely Hydrocotyle spp.) thrives in wet, poorly drained areas. In centipede grass on the Gulf Coast, control starts with cultural changes and targeted herbicides.

Cultural Controls

• Reduce irrigation—dollarweed signals overwatering.
• Hand-dig isolated patches, removing underground runners.
• Improve drainage where possible.

Herbicide Options

• Atrazine (Jan–Feb in Zone 8–9) — effective on broadleaf weeds in centipede. Check local regulations.
• Spot-spray glyphosate (Roundup) for dense patches — kills everything; reseed/sod after.
• Identify weed precisely using university weed ID sites before selecting chemical.

Flower Bed Protection

Install weed-barrier fabric under mulch in beds to block runner spread.

Combine drier conditions, precise herbicide use, and physical removal for lasting control.