// SPECIES PROFILE · ANNUAL · NATIVE

Arrowhead rattlebox

Crotalaria sagittalis

Arrowhead rattlebox (Crotalaria sagittalis) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–11b. Mature size 1"–16". Blooms Jun–Sep.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 36 U.S. states, including AL, AR, AZ, CT, DC, DE…
USDA hardiness: Zones 2b–11b
Mature size: 1"–16"
Sun: —
Water: —
Bloom: Jun–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Arrowhead rattlebox (Crotalaria sagittalis) — *Crotalaria sagittalis* — Arrowhead rattlebox. Photo by Brucewinter via Wikimedia Commons (CC BY-SA 4.0).

Field Notes

[ growing · ecology · siting · care ]

Arrowhead rattlebox (Crotalaria sagittalis) is a annual in the — family. Native range includes AR, KS, MO, OK. Hardy in zones 2b–11b. Mature size 1"–16". Blooms Jun–Sep.

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, arrowhead rattlebox pairs naturally with: Common Sunflower (Helianthus annuus), Swamp verbena (Verbena hastata), Slim amaranth (Amaranthus hybridus), Annual ragweed (Ambrosia artemisiifolia var. artemisiifolia).