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Hollinshead Water-wise Garden Plants

Photo:
Jan Even

Taxon ID#

68

Excellent perennial for a dry garden. Great specimen plant.

Scientific  Name:

Penstemon strictus

Common Name 1

› Rocky Mountain Penstemon

Family:

Scrophulariaceae

Origins:

Southern WY to northern NM & northeastern AZ

Plant Type:

Herbaceous Plant, Perennial
Common Name 2

› Rocky Mountain Beardtongue

Common Name 3

› Strict Beardtongue

Oregon native:

no

Western state native:

yes

Scroll down for more information on each topic

Landscape Application Information

Seasonal Care

Resource Links

MAINTENANCE

Maintenance Level:

Low

Min. USDA Hardiness Zone:

4

Sun Preference:

Full Sun

Water Preference:

L

Soil Preference:

Though this penstemon tolerates heavy soils and moisture better than most members of the genus, it prefers dry, light, well-drained soils.

Fertilizer Needs:

Recommended Mulch:

PLANT DESCRIPTION

Foliage Color:

Green

Foliage Description:

Low mats of foliage with paired leaves that range from narrow and grass-like to broad and lance-shaped

Fragrant:

no

Predominant flower color:

Purple

Flower Description:

Multiple spires of large, royal-blue to purple tubular flowers with two upper lobes that project forward over the lower lips, three deeply cut lobes.

Fall color:

no

Fall Color Description:

Winter Foliage:

Evergreen

Winter Interest:

no

Winter Interest Description:

Mature height:

2-3'

Mature spread:

3'

Growth rate:

Medium

LANDSCAPE APPLICATION

Deer Resistant:

no

Fire Resistant:

yes

Attracts Pollinators:

yes

Attracts Butterflies:

yes

Native Habitat:

Subalpine to valley sagebrush & conifer forests; Rocky Mountain penstemon is often associated with sagebrush in pinyon-juniper woodland, oak scrub,
and openings of ponderosa pine and spruce-aspen
forest from 2200 to 3200 m in elevation.

Attracts Birds:

yes

Cut/Dried Flowers:

yes

Used by Wildlife:

yes

Swales:

no

Wildlife Use:

Penstemons are considered desirable forage
for deer, antelope, and birds either as herbage or seed. They may also provide some cover for selected
small bird species.

Photo:
Pat Kolling

Hedge/Screen:

no

Border:

yes

Erosion Control:

yes

Windbreak:

no

Ground Cover:

no

Provides Shade:

no

Rock Garden:

yes

Cover Structures:

no

First Bloom:

May

Last Bloom:

Adds Texture/Movement:

Jun

Ornamental Accent:

yes

no

Garden Observations:

Seasonal Care
Maintenance

SEASONAL CARE

Spring Care:

Pruning is not necessary, but can be cut back in early spring.

Summer Care:

Deadheading will encourage reblooming and more vigorous growth.

Fall Care:

Winter Care:

Leave some stems for frost protection and mulch with straw in winter, if necessary.

Long Term Care:

Insect Pests:

Wildlife Pests:

Diseases:

Disease problems are minimal except under irrigation. Under irrigation, fusarium wilt can be a problem. https://pnwhandbooks.org/plantdisease/host-and-disease-descriptions?title=Penstemon-Root+Rot

Environmental Problems:

Landscape Problems:

Care Comments:

Do not over irrigate. Penstemon are low maintenance. The main requirement for success is that they need to be planted in well-drained soil-they do not like to have wet feet or crowns. They do best in lean soil without any additional amendments.

RESOURCES

OSU Landscape Profile:

USDA Plants:

Calscape Database:

LBJ Native Plant Database:

Missouri Botanical Garden Database:

Monrovia Profile:

Alternate Source 1:

Alternate Source 2:

Source Comment:

Landscape Application
Resource Links

Plant Maintenance Information

Image by Mikaela Wiedenhoff

Sponsors
Desert Peaks Healthcare
George & Vickie Minor
Whistle Stop Farm & Flowers

McPheeter's Turf
High Desert Farms Nursery Sales, LLC
Schilling's Garden Market

Speakers
Karen McCarthy, Madras Garden Depot
Dan Denning, City of Bend
Nicole Bell, OSU Ecology Lab

Professor Amy Jo Detweiler
Craig LeHoullier
Amanda Egertson, Deschutes Land Trust
Dana Sanchez, OSU
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