// SPECIES PROFILE · PERENNIAL · NATIVE

Swamp milkweed

Asclepias incarnata ssp. incarnata

Swamp milkweed (Asclepias incarnata ssp. incarnata) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2a–11b. Mature size 2'–5'. Blooms Jun–Oct.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 44 U.S. states, including AL, AR, CO, CT, DC, DE…
USDA hardiness: Zones 2a–11b
Mature size: 2'–5'
Sun: Part shade
Water: High · moisture-loving
Bloom: Jun–Oct
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Swamp milkweed (Asclepias incarnata ssp. incarnata) — *Asclepias incarnata ssp. incarnata* — Swamp milkweed. Photo via iNaturalist — (c) aarongunnar, some rights reserved (CC BY), uploaded by aarongunnar.

Field Notes

[ growing · ecology · siting · care ]

Swamp milkweed (Asclepias incarnata ssp. incarnata) is a perennial in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2a–11b. Mature size 2'–5'. Blooms Jun–Oct.

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, swamp milkweed pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Lady Fern (Athyrium filix-femina), Swamp Milkweed (Asclepias incarnata), Wild Strawberry (Fragaria virginiana).