Penstemon serrulatus (Cascade Penstemon) is a handsome Pacific Northwest native and one of the more adaptable penstemons for gardens west of the Cascades. Found from British Columbia north to Alaska and south into Oregon, it grows in moist meadows, woodland openings, streambanks, and rocky slopes from low elevations to the subalpine. Upright stems rise from a branching, somewhat woody base, bearing glossy green leaves with distinctive finely serrated margins.
In early to midsummer, the stems are topped with clusters of tubular, deep blue to violet-purple flowers that are particularly attractive to hummingbirds, bees, and butterflies. Unlike many penstemons, this species appreciates some moisture and tolerates everything from full sun to partial shade, making it especially useful for woodland gardens, moist rock gardens, and naturalistic plantings. A particularly rewarding native perennial for the Pacific Northwest. Hardy to USDA Zone 3.
Penstemon serrulatus (Cascade Penstemon) is a handsome Pacific Northwest native and one of the more adaptable penstemons for gardens west of the Cascades. Found from British Columbia north to Alaska and south into Oregon, it grows in moist meadows, woodland openings, streambanks, and rocky slopes from low elevations to the subalpine. Upright stems rise from a branching, somewhat woody base, bearing glossy green leaves with distinctive finely serrated margins.
In early to midsummer, the stems are topped with clusters of tubular, deep blue to violet-purple flowers that are particularly attractive to hummingbirds, bees, and butterflies. Unlike many penstemons, this species appreciates some moisture and tolerates everything from full sun to partial shade, making it especially useful for woodland gardens, moist rock gardens, and naturalistic plantings. A particularly rewarding native perennial for the Pacific Northwest. Hardy to USDA Zone 3.
