Electric Blue Foothill Penstemon

Electric Blue Foothill Penstemon (Penstemon heterophyllus 'Electric Blue') is a sensational California native perennial that earns its electrifying name with tubular flowers in the most vivid, saturated sky-to-cobalt blue imaginable — a color of shocking purity and intensity that stops the eye cold and commands the full attention of every hummingbird in the vicinity. Slender, upright flower spikes rise above the fine, blue-green foliage from late spring through midsummer, creating a long, luminous blue floral display that is among the most spectacular available from any California native plant. Budding flowers open with warm magenta-pink tints that transition to pure electric blue as the blooms mature, adding a captivating two-tone progression to the display.

Cultivated from Professional Grade root systems, Electric Blue Penstemon is an essential anchor plant for California native, Mediterranean, and water-wise garden designs throughout the Pacific Coast region. Its compact, tidy habit suits mixed borders, rock gardens, slope plantings, and raised beds, and it thrives in the lean, sharply drained soil and dry summer conditions of its native foothill habitat. Once established, it requires virtually no supplemental summer irrigation, making it a model plant for drought-resilient, ecologically responsible California gardening.

Why You'll Love It

• Electrifying Pure Blue Flowers: Tubular blooms in a saturated, luminous cobalt-blue of exceptional purity and intensity — among the most vivid true blues achievable from any flowering perennial in the California native plant palette, with a captivating magenta-to-blue color progression as buds open.
• Premier Hummingbird Magnet: Tubular flowers are a top-tier nectar source for Anna's hummingbirds and other hummingbird species during the critical late spring and early summer foraging season — one of the most hummingbird-attractive of all California native perennials.
• True California Native Ecological Value: Supports native bees, beneficial insects, and hummingbirds while contributing to ecologically appropriate, regionally meaningful garden ecosystems that honor the natural heritage of the California landscape.
• Exceptional Drought Tolerance: Thrives on minimal to no summer irrigation once established in well-drained soil — a model plant for drought-resilient California native gardens, xeriscape designs, and low-water sunny border plantings.
• Compact, Garden-Ready Habit: Tidy, refined upright habit suits a wide range of garden placements including mixed borders, rock gardens, raised beds, and slope plantings — far more manageable than many native penstemon species.

These 4" healthy live plants thrive in full sun in sharply drained, low-fertility soil. Excellent drainage is absolutely critical — Electric Blue Penstemon is highly susceptible to crown rot in heavy clay, waterlogged, or summer-wet conditions. Water sparingly to establish during the first season, then transition to a dry summer regime consistent with California native growing requirements. Best suited for USDA Hardiness Zones 7–10; native to the foothills and coastal ranges of California. Mature height: 12–24 inches; spread: 12–18 inches. Blooms late spring through midsummer. Trim lightly after blooming to maintain a tidy habit; do not cut back into woody stems. Mulch lightly and keep mulch away from the crown.