// SPECIES PROFILE · ANNUAL · NATIVE

White rattlesnakeroot

Prenanthes alba

White rattlesnakeroot (Prenanthes alba) is a annual in the — family. Native range includes AR, MO. Hardy in zones 2b–9a. Mature size 2'–5'. Blooms Aug–Sep.

// QUICK FACTS

Family: —
Group: annual
Native range: Native to 29 U.S. states, including AR, CT, DC, DE, GA, IA…
USDA hardiness: Zones 2b–9a
Mature size: 2'–5'
Sun: Part shade
Water: —
Bloom: Aug–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

White rattlesnakeroot (Prenanthes alba) — *Prenanthes alba* — White rattlesnakeroot. Photo by (c) davecz2, some rights reserved (CC BY-SA) via Wikimedia Commons (CC BY-SA 4.0).

Field Notes

[ growing · ecology · siting · care ]

White rattlesnakeroot (Prenanthes alba) is a annual in the — family. Native range includes AR, MO. Hardy in zones 2b–9a. Mature size 2'–5'. Blooms Aug–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, white rattlesnakeroot pairs naturally with: Black-Eyed Susan (Rudbeckia hirta), Common Sunflower (Helianthus annuus), Swamp verbena (Verbena hastata), Slenderleaf false foxglove (Agalinis tenuifolia).