// SPECIES PROFILE · ANNUAL · NATIVE

Western tansymustard

Descurainia pinnata

Western tansymustard (Descurainia pinnata) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2a–11b. Blooms Apr–Jul.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 44 U.S. states, including AR, AZ, CA, CO, CT, FL…
USDA hardiness: Zones 2a–11b
Mature size: —
Sun: Full sun
Water: —
Bloom: Apr–Jul
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Western tansymustard (Descurainia pinnata) — *Descurainia pinnata* — Western tansymustard. Photo by Copyright by Curtis Clark, licensed as noted via Wikimedia Commons (CC BY-SA 2.5).

Field Notes

[ growing · ecology · siting · care ]

Western tansymustard (Descurainia pinnata) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2a–11b. Blooms Apr–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, western tansymustard pairs naturally with: Common Sunflower (Helianthus annuus), Swamp verbena (Verbena hastata), Annual ragweed (Ambrosia artemisiifolia var. artemisiifolia), Lambsquarters (Chenopodium album).