North America Native Plant

White River Beardtongue

Botanical name: Penstemon scariosus var. scariosus

USDA symbol: PESCS

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

White River Beardtongue: A Rare Utah Native Worth Growing Responsibly Meet the White River beardtongue (Penstemon scariosus var. scariosus), a charming perennial wildflower that’s as unique as its name suggests. This delightful native plant brings both beauty and ecological value to gardens, but there’s an important conservation story behind its ...

Rare plant alert!

Region: Conservation status by state

Status: S4T3T4: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is 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. ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘ Subspecies or varieties is apparently secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the region or more than 10,000 individuals ⚘

White River Beardtongue: A Rare Utah Native Worth Growing Responsibly

Meet the White River beardtongue (Penstemon scariosus var. scariosus), a charming perennial wildflower that’s as unique as its name suggests. This delightful native plant brings both beauty and ecological value to gardens, but there’s an important conservation story behind its pretty blooms that every gardener should know.

A True Utah Original

The White River beardtongue is a proud Utah native, found exclusively within the state’s borders. As a perennial forb (that’s garden-speak for a non-woody flowering plant that comes back year after year), this beardtongue represents the resilient spirit of Utah’s native flora. It’s perfectly adapted to the unique conditions of its homeland, making it a fantastic choice for gardeners looking to celebrate local plant heritage.

What Makes This Plant Special

Like other members of the beloved Penstemon family, White River beardtongue produces tubular flowers that are absolute magnets for pollinators. The blooms typically appear in shades of white to pale pink, creating a soft, elegant display that fits beautifully into naturalistic garden designs.

As a forb, this plant maintains a relatively low, herbaceous growth habit without developing woody stems. This makes it perfect for mixing with grasses and other wildflowers in prairie-style plantings or rock gardens.

Important Conservation Note

Here’s where things get serious for a moment: White River beardtongue has a conservation status that requires our attention. With its limited natural range and specific habitat requirements, this plant is considered relatively rare in the wild. If you’re interested in growing this beauty, please make sure you source your plants or seeds from reputable native plant nurseries that practice responsible propagation methods. Never collect from wild populations!

Growing White River Beardtongue Successfully

The good news is that this Utah native is well-suited to garden life, especially if you can mimic its preferred natural conditions:

  • Sunlight: Full sun is best, though it can tolerate some light shade
  • Soil: Well-draining soil is absolutely essential – think rocky or sandy conditions
  • Water: Once established, this drought-tolerant beauty needs minimal supplemental watering
  • Climate: Hardy in USDA zones that match Utah’s growing conditions (typically zones 4-8)

Perfect Garden Partners

White River beardtongue shines in several garden settings:

  • Native plant gardens: Pair it with other Utah natives for an authentic local ecosystem
  • Rock gardens: Its low-maintenance nature and drought tolerance make it ideal for rocky, well-drained sites
  • Xeriscaping: A perfect choice for water-wise landscaping
  • Pollinator gardens: The tubular flowers attract native bees and potentially hummingbirds

Care and Maintenance

One of the best things about native plants is their low-maintenance nature once established. White River beardtongue typically requires minimal care:

  • Avoid overwatering – this plant prefers to stay on the dry side
  • No need for rich, amended soils – it actually prefers lean conditions
  • Deadheading spent flowers can encourage additional blooms
  • Allow some seeds to mature if you want to support local wildlife or encourage natural reseeding

The Bottom Line

White River beardtongue is a wonderful choice for gardeners who want to support native plant conservation while adding a unique, low-maintenance perennial to their landscape. Its specialized nature and limited range make it a conversation starter and a meaningful addition to any native plant collection.

Just remember: with great beauty comes great responsibility. By choosing to grow this rare native responsibly, you’re not just creating a beautiful garden – you’re participating in plant conservation. And that’s something worth celebrating!

White River 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 scariosus Pennell - White River beardtongue

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