Longsepal Beardtongue

(Penstemon calycosus)

Longsepal Beardtongue (Penstemon calycosus)

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Estimated Native Range
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Summary

Penstemon calycosus, commonly known as Longsepal Beardtongue, is a perennial herb that can be deciduous or semi-deciduous, native to open woodlands and prairie margins in the East-Central United States. It typically grows to a height and width of 2-3 feet (0.6-0.9 meters). Longsepal Beardtongue has a clumping form with erect stems and lance-shaped leaves. From late spring to early summer, it produces tubular purple flowers with extended sepals, which are quite showy and attract pollinators such as bees and hummingbirds.

This species is valued for its attractive flowers and ability to adapt to a range of garden conditions. It is often used in perennial borders, native plant gardens, and as a nectar source in pollinator-friendly landscapes. Longsepal Beardtongue prefers well-drained soils and can tolerate drought once established, making it a low-maintenance choice for gardeners. While it thrives in full sun, it can also perform well in part shade. It is not commonly afflicted by serious diseases or pests, but powdery mildew and root rot can occur if conditions are too moist.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 2-3 feet
  • Width: 1.5-2.5 feet
  • Growth Rate: Moderate
  • Flower Color: Pink, Purple
  • Flowering Season: Spring, Summer
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Full Sun, Part Shade
  • Water: Medium
  • Drainage: Medium, Fast

Common Uses

Bee Garden, Bird Garden, Butterfly Garden, Deer Resistant, Drought Tolerant, Hummingbird Garden, Low Maintenance, Rabbit Resistant, Showy Flowers, Street Planting

Natural Habitat

Open woodlands and prairie margins

Other Names

Common Names:

Scientific Names: Penstemon calycosus , Penstemon laevigatus subsp. calycosus , Penstemon laevigatus var. calycosus , Penstemon smallii var. calycosus

GBIF Accepted Name: Penstemon calycosus Small