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  • Cardwell's Penstemon (Penstemon Cardwellii)

Cardwell's Penstemon (Penstemon Cardwellii)

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A woody stemmed plant that grows 4" - 12" tall with purple flowers in early summer. It spreads by layering and may form thick mats. Cardwell’s penstemon grows in full sun to light shade, and wants well-drained, moist to dry soils. Bright purple flowers add contrast to rock gardens or dry beds and it is attractive year-round. Hummingbirds and bumblebees are attracted to the flowers.

$20 for a bundle of 5 bare root seedlings

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Copyright Master Gardener Foundation of San Juan County © 2025
  • Home
    • About Us
  • Events
    • Upcoming Events
    • 2025 Garden Workshop Series >
      • Zoom Info
  • Projects
    • San Juan Island Demonstration Garden
    • Orcas Island School Garden
    • ​Lopez Island Heritage Apple Orchard
    • Grow Your Own Food
  • Resources
  • Contact Us
  • Donate
  • Members
    • MG Volunteer Info
    • MG Projects
    • Reimbursement Form
    • Foundation Enrollment
    • Lopez MGs
    • Orcas + Shaw MGs
    • San Juan MGs