// SPECIES PROFILE · PERENNIAL · NATIVE

Purple rattlesnakeroot

Prenanthes racemosa var. racemosa

Purple rattlesnakeroot (Prenanthes racemosa var. racemosa) is a perennial in the — family. Native range includes MO — verified against the Lady Bird Johnson Wildflower Center native distribution database. Hardy in zones 2b–7b. Mature size 17"–2'. Blooms Aug–Sep.

// QUICK FACTS

Family: —
Group: perennial
Native range: Native to 19 U.S. states, including CO, IA, IL, IN, KY, ME…
USDA hardiness: Zones 2b–7b
Mature size: 17"–2'
Sun: —
Water: —
Bloom: Aug–Sep
Wildlife value: Pollinator and wildlife support
Ecological role: native species profile

Purple rattlesnakeroot (Prenanthes racemosa var. racemosa) — *Prenanthes racemosa var. racemosa* — Purple rattlesnakeroot. Photo via iNaturalist — (c) Dustin Snider, some rights reserved (CC BY).

Field Notes

[ growing · ecology · siting · care ]

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, purple rattlesnakeroot pairs naturally with: Broadleaf Arrowhead (Sagittaria latifolia), Gray Goldenrod (Solidago nemoralis), Lady Fern (Athyrium filix-femina), Maximilian Sunflower (Helianthus maximiliani).