Bitterroot

Lewisia rediviva

Montiaceae

• Spokane Native
  
• USDA Zone 4-8
• Full sun to part shade
• Mature Size: 0.5' tall x 0.5' wide
• Drought Tolerance: Very high; goes dormant in summer heat
• Flower Color / Bloom Time: Deep pink to rose, sometimes white or lavender; April–July
• Wildlife Benefits: Modest pollinator value; primarily notable for its deep ethnobotanical significance

Bitterroot occurs east of the Cascades from southeastern British Columbia to northern California, east to the mountains of Montana, Colorado, and northern Arizona, growing on rocky or gravelly, well-drained slopes in sagebrush shrublands, pinyon-juniper woodlands, oak woods, and ponderosa pine or Douglas-fir forests — conditions well matched to Spokane's dry, rocky sites. Perfect drainage is essential, since the taproot rots easily in wet soil; the plant needs moisture while flowering in spring but a dry summer dormancy afterward, going fully dormant and disappearing from view during the hottest months, true to its Latin epithet rediviva, meaning "brought back to life."

Fingerlike, succulent basal leaves emerge in early spring and typically wither away just before the strikingly beautiful deep pink to rose (occasionally white or lavender) flowers open directly on the gravel, seemingly without foliage — a signature look of this iconic Western wildflower, with each bloom reaching up to two inches across.

While its wildlife value is modest compared to other regional natives, bitterroot holds exceptional cultural significance: it is Montana's state flower and was a vital food and trade plant for many Interior tribes, including the Flathead (Bitterroot Salish), Kutenai, Nez Perce, and Shoshone, who gathered, dried, and cooked the bitter taproot, often mixing it with meat or berries. Meriwether Lewis collected and documented the species in 1806 along what is now Montana's Bitterroot River.

Ideal for rock gardens, dry gravel beds, and xeriscape plantings that mimic its native rocky, sharply drained habitat; avoid heavy clay or any spot that stays wet, especially in winter. Because the foliage disappears in summer, mark its location or interplant with other small, dry-adapted natives so the bare spot isn't mistaken for a dead plant.