// SPECIES PROFILE · PERENNIAL · NATIVE

American marshpennywort

Hydrocotyle americana

American marshpennywort (Hydrocotyle americana) is a perennial in the — family. Native range includes AR — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 2b–9a. Mature size 1"–10". Blooms Jun–Sep.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 24 U.S. states, including AR, CT, DC, DE, IN, KY…
USDA hardiness: Zones 2b–9a
Mature size: 1"–10"
Sun: —
Water: —
Bloom: Jun–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

American marshpennywort (Hydrocotyle americana) — *Hydrocotyle americana* — American marshpennywort. Photo by Doug McGrady from Coventry, RI, USA via Wikimedia Commons (CC BY 2.0).

Field Notes

[ growing · ecology · siting · care ]

Why it's on this list: native species profile. Native-range data from the Lady Bird Johnson Wildflower Center (NPIN), cross-checked against iNaturalist observations. Part of Rooted Revival's regional native plant catalog — true natives for Oklahoma, Arkansas, Missouri and Kansas.

Companion Planting

[ guild · polyculture · cross-layer pairings ]

In the same native range, american marshpennywort pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Blue-Eyed Grass (Sisyrinchium angustifolium), Butterfly Milkweed (Asclepias tuberosa), Cardinal Flower (Lobelia cardinalis).