Large Beardtongue

(Penstemon grandiflorus)

Large Beardtongue (Penstemon grandiflorus)

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Estimated Native Range
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Summary

Penstemon grandiflorus, commonly known as Large Beardtongue, is a semi-deciduous perennial herb native to the tallgrass prairies and glades of the Central United States. It typically grows to a height of 2-4 feet (0.6-1.2 meters) and a width of 1-2 feet (0.3-0.6 meters). The plant features a rosette of basal leaves and erect stems with large, tubular flowers that are predominantly lavender to pink, blooming profusely in late spring to early summer. The flowers are particularly showy and attract a variety of pollinators, including bees and hummingbirds.

Large Beardtongue is valued for its striking floral display and its adaptability to a range of garden settings. It is often used in native plant gardens, perennial borders, and as an accent plant in xeriscapes due to its drought tolerance. This species thrives in full sun and requires well-drained soil, making it suitable for rock gardens and areas with poor fertility. While generally low-maintenance, it can be susceptible to root rot in overly moist conditions and may require protection from strong winds due to its height.CC BY-SA 4.0

Plant Description

  • Plant Type: Herb
  • Height: 2-4 feet
  • Width: 1-1.5 feet
  • Growth Rate: Slow
  • Flower Color: Pink, Purple
  • Flowering Season: Spring, Summer
  • Leaf Retention: Deciduous

Growth Requirements

  • Sun: Full Sun
  • Water: Low, Medium
  • Drainage: Slow, Medium, Fast

Common Uses

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

Natural Habitat

Tallgrass prairies and glades of the Central United States

Other Names

Common Names: Large-Flowered Beardtongue

Scientific Names: , Penstemon grandiflorus, Penstemon bradburii, Chelone bradburii, Chelone grandiflora,

GBIF Accepted Name: Penstemon grandiflorus Fraser