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Rocky Mountain Penstemon

The Rocky Mountain Penstemon (Penstemon strictus) is a penstemon with showy blue flowers.

This species is a herbaceous perennial with a few stems rising nearly straight up from a thick crown. The leaves are long and narrow, with stem leaves smaller and especially narrower than the basal leaves. The leaves are entire and smooth, or possibly downy near the petiole. The inflorescence is a spike. The corolla is 24 to 32 mm (1 to 1.5 inches) long, deep blue with a violet tube, and smooth. The two upper petals point straight along the tube, like a porch roof (hence the seldom-used name "porch penstemon").

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  • Home
    • Contact Us
    • Directions and Hours of Operation
    • Events
    • Meet our Staff
    • Press & Video
  • Nursery
    • Contractors
    • Tree & Plant Reference Guide >
      • Wildflower Seeds >
        • Chinese Houses
        • Baby Blue Eyes
        • Bachelor Blues
        • Drummond Phlox
        • Plains Coreopsis
        • Farewell-To-Spring
        • Scarlet Flax
        • Globegilia
        • Larkspur Rocket
        • California Poppy
        • Flanders Poppy
        • Shirley Poppy
        • Rocky Mountain Bee Balm
        • Baby Snapdragon
        • Sunflower
        • Tidy Tips
        • Wallflower
        • Arrowleaf Balsamroot
        • Pacific Aster
        • Black-eyed Susan
        • Blanket Flower
        • Blue Flax
        • Colorado Columbine
        • Aspen Daisy
        • Purple Coneflower
        • Prairie Coneflower
        • Lanceleaf Coreopsis
        • Dame's Rocket
        • Wild Geranium
        • Fire Flower
        • Desert Globemallow
        • Golden Banner
        • Iceland Poppy
        • Cosmos
        • Rocky Mountain Iris
        • Maiden Pinks
        • Red Mexican Hat
        • Mountain Lupine
        • Large Flowered Penstemon
        • Rocky Mountain Penstemon
        • Wasatch Penstemon
        • White Evening Primrose
        • Showy Goldeneye
        • Northern Sweetvetch
        • White Yarrow
      • Evergreens >
        • Spruce
        • Firs
        • Pines
      • Deciduous >
        • Aspen
        • Ash
        • Birch
        • Chokecherry
        • Cottonwood
        • Crabapple
        • Fruit Trees
      • Fruits and Berries
      • Shrubs
    • Custom Pre-potting Flower Program
    • Gardening Tips for High Altitude Planting >
      • Vegetable Planting Schedule
    • Gardening Blog
    • High Altitude Planting Guide
    • Seasonal >
      • Fall >
        • Fall Bulbs for Spring Blossoms
      • Christmas >
        • Our Christmas Trees
        • Tree Care
  • Flower Barn
  • Garden Boutique
  • Bulk Yard
  • Irrigation