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Native Plant Guide

Information and Services for King County, Washington

Cascade penstemon

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Cascade penstemon
© Greg Rabourn
Cascade penstemon (enlarge)

Penstemon serrulatus

Perennial Groundcover

Height: 3 ft.

Availability: Low

Growing ease: Medium

Moisture req.: dry - moist

Exposure req.: sun - part shade


Plant description:

One of the few penstemons found in the Puget Sound lowlands, cascade penstemons are beautiful wildflowers at home in the landscaped border. This perennial wildflower has trumpet-shaped, purple flowers that draw hummingbirds. Cascade penstemon tolerates more moisture and shade than most other penstemons.

Keywords: birds, butterflies, drought tolerant, perennial (non-woody), purple, upright