Shrubby Penstemon
- Scientific Name: Penstemon serrulatus
- Garden: Wildlife Garden
- Plant Type: Shrub
- Evergreen/Deciduous: Evergreen
- Sun/Shade Exposure: Full Sun
- Moisture Requirements: Moist, well-drained
Plant Information
Scientific name: Penstemon serrulatus This is the Penstemon found west of the Cascades, more tolerant of moist conditions, and which grows successfully in the Willamette Valley. It is a small, woody shrub usually not rising above 2’, with clusters of small bright purple/lavender/blue flowers. Is considered drought-tolerant but does better with regular water.
Characteristics: Whether mat-forming or upright varieties, all have the characteristic tubular flowers; five stamens, one typically bearded and protruding out to the end of the lower edge of the corolla, curled over like a lip, hence the name Beardtongue. Flower color can be white, pink, blue, lavender and purple.
Culture: Most require sharp drainage, full sun, and relatively lean soil.
Pruning: Late summer clean-up as needed, usually all that’s needed.
Pests & Diseases: Occasional leaf spot if too much retained moisture.
Data Source
www.portlandnursery.comPlant Photos
