Davidson's penstemon (Penstemon davidsonii)

Davidson's penstemon

Also known as: Creeping beardtongue, Timberline beardtongue

Both the scientific and common names of Penstemon davidsonii, or davidson's penstemon, honor 19th century geographer and surveyor Dr. George Davidson. This mat-forming perennial blooms with relatively large purple flowers.

Scientific classification

Species

Davidson's penstemon (Penstemon davidsonii)

Mints plantains olives and allies

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Perennial

Lifespan

Herb

Plant Type

Late spring, Early summer

Bloom Time

5 cm to 13 cm

Plant Height

15 cm to 30 cm

Spread

Green, Blue

Leaf Color

2.5 cm

Flower Size

Pink, Purple

Flower Color

Images of Davidson's penstemon

Care Guide for Davidson's penstemon

Every week

Water

Full sun

Sunlight

5 - 35 ℃

Ideal Temperature

Garden Soil

Soil Type

Water: Davidson's penstemon thrives in well-drained soils with moderate moisture and requires weekly watering for optimal growth. This evergreen retains foliage year-round, maintaining steady water usage even in colder months, making it resilient to drought while preferring consistent hydration.

Fertilize: Davidson's penstemon thrives with balanced or high phosphorus fertilizers applied sparingly in spring. During the growing season, use a monthly quarter-strength application, avoiding late summer to prevent frost-sensitive growth. Ensure even distribution and avoid foliage contact; consider organic options like bone meal for natural nourishment.

Pruning: Davidson's penstemon features vibrant flowers and hardy evergreen leaves. Prune in early spring to late winter, removing dead stems to promote health and bushier growth. Light pruning enhances air circulation and bloom duration while avoiding stress from heavy cuts.

Propagation: Davidson's penstemon, a member of the Plantaginaceae family, is propagated through cuttings for genetic consistency. Healthy cuttings with at least one node should be treated with rooting hormone and planted in well-draining soil. Maintain consistent moisture and avoid direct sunlight until roots establish for successful cultivation.

Repotting: Davidson's penstemon requires excellent drainage in pots to thrive, ensuring the roots do not become waterlogged, which can lead to root rot and other issues.

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