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Davidson's Penstemon
Penstemon davidsonii
About Davidson's Penstemon (Penstemon davidsonii) 6 Nurseries Carry This Plant Penstemon davidsonii is a species of penstemon known by the common name Davidson's penstemon, honoring Dr. George Davidson. It is native to North America from the Sierra Nevada Range in California and Nevada through the Coast and Cascade ranges of Oregon and Washington into British Columbia. Penstemon davidsonii is a low, mat-forming perennial up to 10 centimetres (3. 9 in) tall. The leaves are up to 1. 5 centimetres (0. 59 in) long, thick and firm, with entire to serrulate margins. The flowers are tubular, blue-lavender to purple, and large relative to the short stature of the plant. Penstemon davidsonii is included in Penstemon subgenus Dasanthera, along with P. barrettiae, P. cardwellii, P. ellipticus, P. fruticosus, P. lyallii, P. montanus, P. newberryi, and P. rupicola. Varieties: P. davidsonii var. davidsonii - Davidson's penstemonP. davidsonii var. menziesii (D. D. Keck) Cronquist - Menzies' penstemonP. davidsonii var. praeteritus Cronquist - timberline beardtongue
Plant Description
Plant Type
Plant Type
Perennial herb

4 in tall

Flower Color
Flower Color
Purple, Lavender, Blue

Wildlife Supported

Landscaping Information
Shade, Part Shade


Common uses
Common uses
Hummingbird Gardens, Butterfly Gardens, Bee Gardens

For propagating by seed: 1-2 mos. stratification (Everett 1950).

Natural Setting
Site Type
Site Type
Talus outcrops

Annual Precipitation: 9.7" - 132.3", Summer Precipitation: 0.87" - 4.76", Coldest Month: 9.5" - 42.6", Hottest Month: 33.1" - 68.8", Humidity: 0.83" - 22.35", Elevation: 515" - 14090"

Alternative Names
Botanical Names: Penstemon davidsonii var. davidsonii
Common Names: Timberline Penstemon

Sources include: Wikipedia. All text shown in the "About" section of these pages is available under the Creative Commons Attribution-ShareAlike License. Plant observation data provided by the participants of the California Consortia of Herbaria, Sunset information provided by Jepson Flora Project. Propogation from seed information provided by the Santa Barbara Botanical Garden from "Seed Propagation of Native California Plants" by Dara E. Emery. Sources of plant photos include CalPhotos, Wikimedia Commons, and independent plant photographers who have agreed to share their images with Calscape. Other general sources of information include Calflora, CNPS Manual of Vegetation Online, Jepson Flora Project, Las Pilitas, Theodore Payne, Tree of Life, The Xerces Society, and information provided by CNPS volunteer editors, with special thanks to Don Rideout. Climate data used in creation of plant range maps is from PRISM Climate Group, Oregon State University, using 30 year (1981-2010) annual "normals" at an 800 meter spatial resolution.

Links:   Jepson eFlora Taxon Page  CalPhotos  Wikipedia  Calflora

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