Penstemon barbatus 'Rubycunda'
  Common Name: Beardtongue
Common Name (Alternative): Penstemon
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Photo Courtesy of Walters Gardens, Inc.

A great impulse item! This eye-catching first year flowering Penstemon from S&G Flowers produces clusters of relatively large 1.5 inch, scarlet red, slightly fragrant, tubular flowers with a sharply contrasting pure white throat.  Looking at the flowers from a frontal view, they remind one of plump, red lips! 

The fiery blossoms appear during the heat of summer (mid thru late summer), adding a spark to the sunny landscape.  It's hard to believe this tropical looking Penstemon is hardy all the way down to zone 4!

Penstemons are very drought tolerant perennials that are easy to grow and are rarely bothered by insects or diseases.  Plant them in full sun and watch as hummingbirds feast on their delicious nectar.

Introducer: S&G Flowers

Origin: Native Cultivar


  16-20 Inches
  12-18 Inches
Flower Color:
  Red shades
Foliage Color:
  Green 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?:
  Late 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


Size(s) Offered:


Border plants
Cut flower or foliage
Drought Tolerant
Fragrant flowers or foliage
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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Delphinium grandiflorum 'Summer Nights'
Common Name: Delphinium-Dwarf
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Geranium 'Rozanne' PP12175
Common Name: Geranium-Hardy
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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.