Penstemon barrettiae


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Let's talk drought tolerance. This is one step up from cactus. We always marvel at this growing out of cracks in sheer basalt cliffs on the dry Washington side of the Columbia River Gorge and looking oh so good despite the most rigorous of conditions. Great for the rock garden. Good drainage. Purple-pink flowers on this evergreen subshrub.


Plant Type

  • Perennial / Bulb
  • Evergreen

Mature Size


Hardiness Zones

  • Zone 6a (-10 °F)
  • Zone 6b (-5 °F)
  • Zone 7a (0 °F)
  • Zone 7b (5 °F)
  • Zone 8a (10 °F)
  • Zone 8b (15 °F)

Sun Exposure

  • Full Sun

Water Needs

  • Moderate
  • Dry

Bloom Time

  • Spring
  • Deer Resistant Plants