Oklahoma Beardtongue

Penstemon oklahomensis, Plantaginaceae

Zones

5–9

Layer

Herbaceous

Lifespan

Perennial

Growth

Moderate

Guild Roles

Pollinator AttractorBeneficial Insect Habitat

Growing Conditions

Sun

Full Sun (preferred)

Water

Low (established)Moderate (seedling)

Soil pH

6 – 8

Tolerances

Drought

Frost

Heat

Pest Resistance

Disease Resist.

Companion Plants

Silky Prairie CloverDalea villosa

Pollinator SharingNitrogen Fixation

Santa Barbara CeanothusCeanothus impressus

Pollinator SharingWind Protection

Antagonistic Plants

Small's BeardtonguePenstemon smallii

Beardtongue congeners may produce iridoid glycosides that inhibit nearby Penstemon species

Uses

Functions

Specialized Hummingbird PollinationAttracts Native Leafcutter BeesSupports Long-Tongued Bumble BeesProvides Nectar For Sphinx MothsAttracts Beneficial Predatory Wasps

Common Questions

What zones does Oklahoma Beardtongue grow in?

Oklahoma Beardtongue grows in USDA hardiness zones 5 through 9.

What are good companion plants for Oklahoma Beardtongue?

Good companions for Oklahoma Beardtongue include Silky Prairie Clover, Santa Barbara Ceanothus.

Design guilds with Oklahoma Beardtongue and see companion relationships visually.

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