North America Native Plant

Oklahoma Beardtongue

Botanical name: Penstemon oklahomensis

USDA symbol: PEOK

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Oklahoma Beardtongue: A Rare Prairie Gem Worth Protecting Meet Oklahoma beardtongue (Penstemon oklahomensis), a stunning native wildflower that’s as special as it is beautiful. This perennial gem is one of Oklahoma’s own botanical treasures, and if you’re lucky enough to grow it, you’ll be supporting both local wildlife and plant ...

Rare plant alert!

Region: Conservation status by state

Status: S3: Status is uncertain but is somewhere between the following rankings: Vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals ⚘

Oklahoma Beardtongue: A Rare Prairie Gem Worth Protecting

Meet Oklahoma beardtongue (Penstemon oklahomensis), a stunning native wildflower that’s as special as it is beautiful. This perennial gem is one of Oklahoma’s own botanical treasures, and if you’re lucky enough to grow it, you’ll be supporting both local wildlife and plant conservation efforts.

What Makes Oklahoma Beardtongue Special?

Oklahoma beardtongue is a herbaceous perennial that belongs to the diverse Penstemon family. As its name suggests, this plant calls Oklahoma home and is found nowhere else in the wild. Its tubular flowers, typically displaying lovely shades of purple to lavender, create a striking display that catches the eye of both gardeners and pollinators alike.

This native wildflower has earned its place as a conservation priority, carrying a Global Conservation Status of S3, which means it’s considered vulnerable. With only 21 to 100 known occurrences in the wild, this plant is truly a rare find that deserves our attention and protection.

Where Does It Grow Naturally?

Oklahoma beardtongue is endemic to Oklahoma, making it a true state specialty. You’ll find it naturally occurring in specific regions within the state, particularly in areas that provide the right combination of soil and climate conditions.

Why Plant Oklahoma Beardtongue?

There are several compelling reasons to add this native beauty to your garden:

  • Pollinator magnet: The tubular flowers are perfectly designed to attract bees, butterflies, and hummingbirds
  • Low maintenance: Once established, it’s quite drought tolerant and requires minimal care
  • Conservation impact: Growing this rare native helps preserve Oklahoma’s botanical heritage
  • Authentic native landscaping: Perfect for prairie gardens and naturalized areas
  • Long blooming period: Provides extended color and pollinator support

Important Conservation Note

Before you rush out to find Oklahoma beardtongue, here’s something crucial to know: this plant is rare and vulnerable in the wild. If you’re interested in growing it, please only purchase plants or seeds from reputable native plant nurseries that use responsibly sourced, propagated material. Never collect plants from wild populations, as this could harm already vulnerable communities.

Growing Oklahoma Beardtongue Successfully

The good news is that Oklahoma beardtongue isn’t particularly fussy once you understand its preferences. Here’s how to give it the best chance to thrive:

Ideal Growing Conditions

  • Sunlight: Full sun to partial shade
  • Soil: Well-draining soil is essential – this plant doesn’t like wet feet
  • Hardiness: Suitable for USDA zones 6-8
  • Water needs: Drought tolerant once established, but benefits from occasional watering during extended dry periods

Planting Tips

Plant Oklahoma beardtongue in spring or fall when temperatures are moderate. Choose a location with good drainage – if your soil tends to stay wet, consider creating a raised bed or adding amendments to improve drainage. Space plants appropriately to allow for good air circulation.

Care and Maintenance

This native is refreshingly low-maintenance. Once established, it typically needs minimal supplemental watering. Deadheading spent flowers can encourage continued blooming, though leaving some seed heads will provide food for birds and opportunities for natural reseeding.

Perfect Garden Companions

Oklahoma beardtongue fits beautifully into several garden styles:

  • Native prairie gardens: Combine with other Oklahoma natives like purple coneflower and little bluestem grass
  • Rock gardens: Its drought tolerance makes it perfect for well-draining rocky areas
  • Wildflower meadows: Let it naturalize alongside other native wildflowers
  • Pollinator gardens: Plant with other native species to create a buffet for local pollinators

Supporting Wildlife

When you plant Oklahoma beardtongue, you’re creating a valuable resource for local wildlife. The flowers provide nectar for various pollinators, including native bees and butterflies. Hummingbirds are particularly drawn to the tubular flower shape, making this plant an excellent addition to hummingbird gardens.

The Bottom Line

Oklahoma beardtongue represents everything wonderful about native gardening – it’s beautiful, supports local ecosystems, and connects us to our regional landscape heritage. While its rarity means we need to be thoughtful about sourcing, growing this special plant is a meaningful way to participate in conservation while enjoying a truly unique garden addition.

If you’re passionate about native plants and want to grow something truly special, Oklahoma beardtongue deserves a spot on your wish list. Just remember to source it responsibly and enjoy being part of this rare plant’s conservation story.

Oklahoma Beardtongue

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Scrophulariales

Family

Scrophulariaceae Juss. - Figwort family

Genus

Penstemon Schmidel - beardtongue

Species

Penstemon oklahomensis Pennell - Oklahoma beardtongue

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA