// SPECIES PROFILE · PERENNIAL · NATIVE

Purple locoweed

Oxytropis lambertii var. lambertii

Purple locoweed (Oxytropis lambertii var. lambertii) is a perennial in the — family. Native range includes KS, MO, OK. Hardy in zones 2a–8a. Blooms Jun–Sep.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 15 U.S. states, including AZ, CO, IA, KS, MN, MO…
USDA hardiness: Zones 2a–8a
Mature size: —
Sun: Full sun
Water: Low · xeric
Bloom: Jun–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Purple locoweed (Oxytropis lambertii var. lambertii) — *Oxytropis lambertii var. lambertii* — Purple locoweed. Photo via iNaturalist — (c) Matt Berger, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

Purple locoweed (Oxytropis lambertii var. lambertii) is a perennial in the — family. Native range includes KS, MO, OK. Hardy in zones 2a–8a. Blooms Jun–Sep. Low water use makes it a strong candidate for xeric and drought-conscious plantings.

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, purple locoweed pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Lady Fern (Athyrium filix-femina), Mexican Hat (Ratibida columnifera), Sneezeweed (Helenium autumnale).