Penstemon humilis
Common Name(s):
Lowly penstemon
Lowly beardtongue
Synonym:
Penstemon humulus
low beardtongue
Flower:
Blue
Blooms :
May
to:
Jul
Tubular flower with 2 lobed upper lip and 3 lobed lower lip
Botanical Description
Fragrant?
NO
Family:
Plantaginaceae
Small Shrub (usually < 1.5' and not >3'
Foliage:
Green
Spoon shaped basal leaves about 2" long, stem leaves smaller
Fall Color?
YES
Green leaves present
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:
5
Water Needs:
L
Sun Needs:
Full Sun
Deer Resistant?
YES
Firewise?
YES
Height:
1-3'
Spread:
.5-1'
Growth Rate:
Medium
Native Habitat:
Dry rocky plains and foothills
Soil:
Well- drained
Care Recommendations
Maintenance Level:
Low
Fertilizer:
Doesn't require any but a well balanced slow release is best applied in early spring
Mulch:
Gravel, crushed rock, pebbles
Low maintenance plant, give infrequent watering, plant in sandy soil, give full sun, remove spent flower stalks, divide if necessary
Long Term:
Winter:
Ensure plant is not left in overly wet conditions
Spring:
Remove dead stems and foliage, provide full sun, well-drained soil, remove winter mulch, watch for pests
Summer:
Water sparingly, give full sun, fast-draining soil, deadhead spent blooms
Fall:
Avoid heavy pruning, decrease water frequency, mulch to protect roots, ensure well-drained soil
General Care Comments:
Needs full sun, water sparingly, deadhead spent blooms, susceptible to insects and disease if conditions are too wet
Common Problems
Most are related to wet conditions that cause crown or root rot
Diseases:
Powdery mildew, leaf spot, root rot
Insects:
Aphids, spider mites, penstemon weevils and moths,
Environmental Problems:
Cannot tolerate wet conditions
Pests:
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