Penstemon 'Dark Towers' PP20013 COPF

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Photo Courtesy of Walters Gardens, Inc.
 Common Name: Beardtongue

This tremendous improvement over ‘Husker Red’ was developed by Penstemon expert Dale Lindgren of the University of Nebraska who also hybridized 'Husker Red'.  In comparison, ‘Dark Towers’ PP20013 has much darker foliage that emerges wine purple and keeps its color much better through the summer heat. It grows a bit taller than ‘Husker Red’ and produces masses of pink, rather than white, flowers in early to midsummer depending on the zone. 

Like all of our Penstemons, this one takes the heat and humidity in stride but is also very cold hardy.  It continues to provide terrific color in the landscape all season long.

Breeder: Dale Lindgren of the University of Nebraska

Origin: Native Cultivar


  36-42 Inches
  30 Inches
Flower Color:
  Pink shades
Foliage Color:
  Purple shades
Hardiness Zone:
Find Your Zone
Sun or Shade?:
  Full sun (> 6 hrs. direct sun)
Wet or dry?:
  Low water needs
  Average water needs
Want to see wings?:
  Attracts hummingbirds
How fast should it grow?:
When should it bloom?:
  Early summer
How's your soil?:
  Average Soil
  Fertile Soil
Sweet or Sour Soil?:
  Neutral Soil (pH = 7.0)
What's your garden style?:
  Rock Garden


Border plants
Cut flower or foliage
Drought Tolerant
Mass Planting
Salt Tolerant
Easy to grow

Homeowner Growing & Maintenance Tips:

Penstemons should be grown in full sun and very well-drained soil to avoid root rot. Soil fertility need only be average, but a light mulch in winter is recommended. Use Penstemons in the border, for naturalizing, and for cut flowers.


Common/Botanical Name
Cerastium tomentosum 'Yo Yo'
Common Name: Snow in Summer
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Geranium 'Orkney Cherry' PP18263
Common Name: Geranium-Hardy
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Paeonia 'Sarah Bernhardt'
Common Name: Peony-Garden
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Achillea 'Pretty Belinda'
Common Name: Yarrow
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Veronica longifolia 'Eveline' PP14888 CPBR2404
Common Name: Speedwell-Long-leaf
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Dianthus 'Dragon Fruit' PP21894
Common Name: Pinks
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While every effort has been made to describe this plant accurately, please keep in mind that the height, bloom time, and color may differ in various climates throughout the country. The description of this plant was written based on our experience growing it in Michigan (USDA hardiness zone 5) and on numerous outside resources.