Hydrocotyle spp.
broadleaf weedUSDA zones 6–10Active: spring, summer, fallPerennial weed common in warm, moist lawns. Named for its round, silver-dollar-shaped leaves. Indicates overwatering or poor drainage.
Round, shiny leaves with scalloped edges; stem attaches to center of leaf (peltate); spreads by rhizomes and tubers.
Dollarweed thrives in excess moisture. Water deeply but infrequently to discourage it.
When: Adjust irrigation throughout growing season
Address low spots and poor drainage areas where dollarweed concentrates.
When: Grade and aerate problem areas in fall
Wet the weed and apply baking soda directly. Can burn dollarweed leaves on contact.
When: Apply on a hot, sunny day for best contact kill
Very effective on dollarweed in warm-season turf. DO NOT use on cool-season grasses.
When: Apply in spring or fall when dollarweed is actively growing
Active ingredient: Atrazine — e.g. Southern Ag Atrazine, Bonus S
Selective broadleaf control for warm and cool-season turf.
When: Apply when dollarweed is actively growing
Active ingredient: Metsulfuron-methyl — e.g. Manor, Blade
Grass safety: always match herbicides to your grass species — products safe on Kentucky bluegrass can kill St. Augustine or centipede. Lawn Guardian checks this automatically against your lawn profile.
Lawn Guardian turns this guidance into a schedule timed to your USDA zone and this week's actual weather — and adapts every time you log what you've done.
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