Western Rattlesnakeroot

Prenanthes alata (Hook.) D. Dietr.

Aster family

Plant Type
Forb/herb
Life Cycle
Perennial
Mature Height
32 inches
Flower Color
White, Purple
Bloom Time
Late Spring, Early Summer, Mid Summer, Late Summer

Native Range

  • USA:  Alaska, Idaho, Montana, Oregon, Washington
  • CAN:  Alberta, British Columbia

Regional Native Status: L48 (N), AK (N), CAN (N)

State-level native status is based on data available through Plants of the World Online. Regional Native Status comes from the USDA Plants Database. For more detailed native status information, please refer to BONAP.