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Penstemon cobaea

Family: plantaginaceae
Common name(s): showy beard-tongue
Hardiness ratings: USDA zone 4~5 - 5~10

General resources

  • Wikipedia. Online encyclopedia entry (if defined).
  • Google images. Web search for photographs.
  • GRIN. Taxonomical details, with common names, distribution, and synonyms.
  • The Plant List. Taxonomical lookup

Links for Penstemon cobaea

Penstemon cobaea var. cobaea


Penstemon cobaea var. purpureus

Common name(s): dew flower
Hardiness ratings: USDA zone 5 - 8


  • All Things Plants - Community-assembled plant profile (3 photos)
  • Missouri Botanical Garden - Plantfinder page for one of the plants growing at the garden, with usually one or more photos, horticultural information, and noteworthy characteristics. (zone 5-8)

Last updated:10 Mar 2018