Green Neighbors Program

The Clark County Green Neighbors Program is coordinated by Clark County Public Health’s Solid Waste and Environmental Outreach to assist citizens with developing more sustainable lifestyles and building a strong environmental community in Clark County. Solid waste regional planning and programs are a cooperative effort of Battle Ground, Camas, Clark County, La Center, Ridgefield, Vancouver, Washougal, and Yacolt.

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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

Photo Credit

PESE full BB (©2020 Barbara Bloomfield), PESE flower MMK, PESE leaf MMK (©2020 Margaret Kerwin)