// SPECIES PROFILE · PERENNIAL · NATIVE

Platte river milkvetch

Astragalus plattensis

Platte river milkvetch (Astragalus plattensis) is a perennial in the — family. Native range includes KS, OK. Hardy in zones 2a–10a. Mature size 1"–6". Blooms Mar–Jul.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 9 U.S. states, including CO, KS, MT, ND, NE, OK…
USDA hardiness: Zones 2a–10a
Mature size: 1"–6"
Sun: Full sun
Water: —
Bloom: Mar–Jul
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Platte river milkvetch (Astragalus plattensis) — *Astragalus plattensis* — Platte river milkvetch. Photo by Craig Martin https://www.inaturalist.org/people/craigmartin via Wikimedia Commons (CC0).

Field Notes

[ growing · ecology · siting · care ]

Platte river milkvetch (Astragalus plattensis) is a perennial in the — family. Native range includes KS, OK. Hardy in zones 2a–10a. Mature size 1"–6". Blooms Mar–Jul.

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, platte river milkvetch pairs naturally with: Aromatic Aster (Symphyotrichum oblongifolium), Broadleaf Arrowhead (Sagittaria latifolia), Gray Goldenrod (Solidago nemoralis), Lady Fern (Athyrium filix-femina).