// SPECIES PROFILE · ANNUAL · NATIVE

Smooth jewelflower

Streptanthus hyacinthoides

Smooth jewelflower (Streptanthus hyacinthoides) is a annual in the — family. Native range includes AR, KS, OK. Hardy in zones 5b–10a. Mature size 6"–4'. Blooms May–Jun.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to AR, KS, LA, OK, TX
USDA hardiness: Zones 5b–10a
Mature size: 6"–4'
Sun: —
Water: —
Bloom: May–Jun
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Smooth jewelflower (Streptanthus hyacinthoides) — *Streptanthus hyacinthoides* — Smooth jewelflower. Photo by Eric Hunt via Wikimedia Commons (CC BY-SA 4.0).

Field Notes

[ growing · ecology · siting · care ]

Smooth jewelflower (Streptanthus hyacinthoides) is a annual in the — family. Native range includes AR, KS, OK. Hardy in zones 5b–10a. Mature size 6"–4'. Blooms May–Jun.

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, smooth jewelflower pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Indian Blanket (Gaillardia pulchella), Lemon Beebalm (Monarda citriodora).