Lyall’s penstemon
Common name: Lyall’s penstemon
Botanical name: Penstemon lyallii
Light: full sun
Height: 12 – 24 inches
Water: low, drought tolerant
Soil type: sharply draining stony soils
Perennial wildflower with pale purple to lavender tubular 1-5″ flowers in midsummer; spreads into large plants several feet across; attracts hummingbirds; great for rock gardens
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