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American Water-pennywort

Hydrocotyle americana

In the Carolinas and Georgia, found in bogs, marshes, seepages, cliffs and ledges where wet by seepage or spray from waterfalls, sometimes roadside ditches. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you

45
Good

Native to Arkansas. How scores work Is it native here?

Profile 100%

Height
2–10 inches
Light
Dappled sunlight, Deep shade
Soil moisture
Moist to standing water
Will it fit your yard?

At a glance

Life cycle
Perennial
Bloom
June to September

Not yet recorded · Spread · Leaves

Recorded in 1 Arkansas county.

Natural habitats

Places it grows wild. Not a planting requirement. Each habitat page lists the plants and wildlife also found there.

1 of 4

Freshwater marshes

Open, herb-covered wetlands with fresh, non-tidal water.

Seeps and springs

Places where groundwater keeps the soil or rock wet, such as seepage slopes and spring runs.

Cliffs, ledges and rocky summits

Cliffs, ledges, rock outcrops, talus and rocky summits where the source does not name the rock. A named rock files the place under its own glade or outcrop type instead.

Roadsides, fields and disturbed ground

Ground opened by people: roadsides, old fields, pastures, fencerows and lots.

All habitats

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in Arkansas. Shared habitat, not food. 44 animals.

Widespread birds also seen here (75)

Found in many habitats here, so not listed above.

All wildlife of Arkansas

Ecological relationships

Who uses this plant?

What these records mean

6CaterpillarsGenus host records with ranges including AR

Genus host records with ranges including AR · Hydrocotyle

  • Elophila obliteralisWaterlily Leafcutter Moth
  • Enigmogramma basigeraPink-Washed Looper Moth
  • Herpetogramma bipunctalisSouthern Beet Webworm, Two-Spotted Herpetogramma
  • Papilio polyxenesBlack Swallowtail, Celery Caterpillar, Fennel Worm, Desert Black Swallowtail, Parsnip Swallowtail
  • Sparganothis sulfureanaSparganothis Fruitworm Moth, Sulfur Leafroller, False Yellow-Head
  • Spodoptera eridaniaSouthern Armyworm Moth
Shropshire & Tallamy 2025, Lepidoptera of North America north of Mexico, ZooKeys 1261 (ODbL)
2BeesSoutheastern regional records

Southeastern regional records · Hydrocotyle

Individual names are not available yet.

Noori, Seltmann & Orr 2026, A curated and integrated dataset for exploring global bee-plant interactions (GloBI), Zenodo, CC BY 4.0
0Specialist beesPollen specialists
1BirdsRecorded eating Hydrocotyle in Arkansas

Diet records by plant genus, from studies across North America. Not a record from this state. Birds whose range includes Arkansas, most records first.

Avian Diet Database (Hurlbert Lab)

Direct food only. Caterpillars on host plants also feed nesting birds. NC Native Plant Society: butterfly gardening

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Birds that eat Hydrocotyle 1

Diet records by plant genus, from studies across North America. Not a record from this state. Avian Diet Database (Hurlbert Lab), CC0 1.0.

Growing and identification

Plant details

Family
Araliaceae
Hardiness
Zones 3a–7b
Soil pH
Acidic to neutral
Flower color
Green or white

Safety has not been reviewed for this plant; check toxicity and thorns before planting.

Growing sources and scope
Also known as

American Marsh Pennywort; American Water pennywort

Conservation status

Arkansas rankSH
Global rankG5
AR statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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How to check your spot

Sources