// SPECIES PROFILE · ANNUAL · NATIVE

River broom rape

Orobanche riparia

River broom rape (Orobanche riparia) is a annual in the — family. Native range includes KS, MO, OK. Hardy in zones 2b–10a. Mature size 1"–14". Blooms Aug–Oct.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 15 U.S. states, including CO, DC, IL, IN, KS, KY…
USDA hardiness: Zones 2b–10a
Mature size: 1"–14"
Sun: —
Water: —
Bloom: Aug–Oct
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

River broom rape (Orobanche riparia) — *Orobanche riparia* — River broom rape. Photo via iNaturalist — no rights reserved.

Field Notes

[ growing · ecology · siting · care ]

River broom rape (Orobanche riparia) is a annual in the — family. Native range includes KS, MO, OK. Hardy in zones 2b–10a. Mature size 1"–14". Blooms Aug–Oct.

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, river broom rape pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Plains Coreopsis (Coreopsis tinctoria), Louisiana devil's-claw (Proboscidea louisianica).