// SPECIES PROFILE · VINE · NATIVE

Marsh pea

Lathyrus palustris

Marsh pea (Lathyrus palustris) is a vine in the — family. Native range includes MO, OK. Hardy in zones 1a–11a. Mature size 6"–3'. Blooms Apr–Aug.

// QUICK FACTS

Family: —
Group: vine
Native range: Native to 36 U.S. states, including AK, CA, CT, DC, DE, GA…
USDA hardiness: Zones 1a–11a
Mature size: 6"–3'
Sun: Full sun
Water: —
Bloom: Apr–Aug
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Marsh pea (Lathyrus palustris) — *Lathyrus palustris* — Marsh pea. Photo by Ivar Leidus via Wikimedia Commons (CC BY-SA 4.0).

Field Notes

[ growing · ecology · siting · care ]

Marsh pea (Lathyrus palustris) is a vine in the — family. Native range includes MO, OK. Hardy in zones 1a–11a. Mature size 6"–3'. Blooms Apr–Aug.

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, marsh pea pairs naturally with: Common Sunflower (Helianthus annuus), Lady Fern (Athyrium filix-femina), Wild Strawberry (Fragaria virginiana), Yarrow (Achillea millefolium).