Penstemon davidsonii
Common Name(s):
Davidson's penstemon
Creepiing penstemon
Synonym:
Penstemon menziesii ssp. davidsonii
Timberline penstemon
Flower:
Blue
Blooms :
Jun
to:
Aug
Tubular with 2-lobed upper lip and 3-lobed lower lip
Botanical Description
Fragrant?
NO
Family:
Plantaginaceae
Herbaceous Plant, Perennial
Foliage:
Green
Leaves basal 1-2 inches long, stem leaves opposite, glabrous, quite thick
Fall Color?
YES
Green leaves persistent
Evergreen
Photo by:
Heading 6
Green leaves present
Oregon Native?
YES
West State Native?
YES
Origins:
Western United States
Site Selection
Minimum USDA Hardiness Zone:
4
Water Needs:
L
Sun Needs:
Full Sun
Deer Resistant?
YES
Firewise?
YES
Height:
8-10"
Spread:
1-2'
Growth Rate:
Medium
Native Habitat:
Rocky outcrops
Soil:
Rocky
Care Recommendations
Maintenance Level:
Medium
Fertilizer:
Rarely requires fertilizer other than maybe a light application in the fall
Mulch:
Gravel, stone chippings, pune needles
Give occassional water every 10-14 days, full sun, needs gritty, sandy or rocky soil, has very low fertilization needs
Long Term:
Winter:
Ensure perfect drainage, protect from cold and wind, avoid heavy wet mulches, do not cut back
Spring:
Give full sun, excellent drainage, use low water, prune old growth by about half once new growth appears
Summer:
Give water every 10-14 days, deadhead spent flowers
Fall:
Reduce water to near zero, remove fallen leaves, mulch
General Care Comments:
Plant in full sun, naturally adapted to subalpine or rocky mountain conditions, do not overcrowd, plant high with root ball above soil line, low water, deadhead after blooming, skip fertilizer
Common Problems
Over watering and poor drainage
Diseases:
Leaf spots, root rots
Insects:
Aphids, spider mites, thrips
Environmental Problems:
Poorly drained woils, heat stress, soil salinity
Pests:
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