General Plant Information (Edit)
Plant Habit: Herb/Forb
Life cycle: Perennial
Sun Requirements: Full Sun
Minimum cold hardiness: Zone 5a -28.9 °C (-20 °F) to -26.1 °C (-15 °F)
Plant Height: 18 - 24 inches
Plant Spread: 12 - 18 inches
Leaves: Unusual foliage color
Semi-evergreen
Flowers: Showy
Flower Color: White
Bloom Size: 1"-2"
Flower Time: Spring
Late spring or early summer
Underground structures: Taproot
Suitable Locations: Xeriscapic
Uses: Will Naturalize
Wildlife Attractant: Bees
Hummingbirds
Propagation: Seeds: Stratify seeds: 3 months at 40 degrees

Image
Common names
  • Cobaea penstemon
  • Dewflower
  • Foxglove
  • Showy Beardtongue
  • Beardtongue
  • Wild Belladonna
  • Fairy Thimbles
  • Dew Flower
  • Prairie beardtongue
  • Large-flowered penstemon
  • Large-flowered beardtongue
  • False foxglove
  • Prairie penstemon
  • Wild foxglove
  • Penstemon

Photo Gallery
Location: Missouri Botanical Garden in St Louis
Date: 2023-08-14
Location: Illinois, US
Date: 2018-06-16
Location: IL
Date: 2019-06-23
Has this labeled as P. cobaea. Maybe a cultivar or variety that's
Location: IL
Date: 2019-06-23
Location: north central Texas
Date: April or May, year unknown
Location: Northeastern, Texas
Date: 2019-11-02
Location: My garden in St Louis
Date: 2024-05-12
Location: Molly Hollar Wildscape Arlington, Texas.
Date: 2012-04-27
Close up of flower.

Date: 1959
illustration by Mary E. Eaton from 'Addisonia', 1959
Location: Illinois, US
Date: 2018-06-16
Location: Molly Hollar Wildscape Arlington, Texas.
Date: 2012-04-27
A lovely group of plants.
Location: IL
Date: 2019-06-23
Location: Missouri Botanical Garden in St Louis
Date: 2023-06-08
Location: Illinois, US
Date: 2018-06-16
Location: Medina Co., Texas
Date: April 4, 2012
Wild Foxglove
Location: My garden in Belgium
Date: 2010-08-22
1st year plant
Location: Molly Hollar Wildscape Arlington, Texas.
Date: 2012-04-27
Growing in the prairie.
Location: Illinois, US
Date: 2018-06-16

Photo courtesy of Annie's Annuals and Perennials
  • Uploaded by Joy

Courtesy of Diane's Flower Seeds
Uploaded by MrsBinWY
Plant Events from our members
lovesblooms On January 28, 2017 Seeds sown
w/s
lovesblooms On January 28, 2017 Seeds sown
w/s
MrsBinWY On January 5, 2019 Seeds sown
WS eight (8x5) 2.25" pots, seeds from 2017G.
MrsBinWY On November 25, 2017 Seeds sown
Experiment: Eight (8) 2.25" pots in garden hoop, seeds from 2017G
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