North America Native Plant

Brandegee’s Penstemon

Botanical name: Penstemon glaber var. brandegeei

USDA symbol: PEGLB

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Penstemon alpinus Torr. ssp. brandegeei (Porter) Penl. (PEALB)  âš˜  Penstemon brandegeei (Porter) Porter ex Rydb. (PEBR13)   

Brandegee’s Penstemon: A High-Altitude Native Gem Worth the Challenge If you’re looking for a true mountain native that brings authentic high-country charm to your garden, Brandegee’s penstemon (Penstemon glaber var. brandegeei) might just be the plant you’ve been searching for. This perennial wildflower is as tough as the rocky slopes ...

Rare plant alert!

Region: Conservation status by state

Status: S5T3T4: 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. ⚘ 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 ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Brandegee’s Penstemon: A High-Altitude Native Gem Worth the Challenge

If you’re looking for a true mountain native that brings authentic high-country charm to your garden, Brandegee’s penstemon (Penstemon glaber var. brandegeei) might just be the plant you’ve been searching for. This perennial wildflower is as tough as the rocky slopes it calls home, though it asks for a bit of understanding when it comes to cultivation.

Meet This Mountain Native

Brandegee’s penstemon is a native forb that grows naturally in the high-elevation regions of Colorado and New Mexico. As a variety of the broader Penstemon glaber species, it has earned its own recognition in the botanical world, sometimes appearing under the synonyms Penstemon alpinus ssp. brandegeei or Penstemon brandegeei in older references.

This hardy perennial belongs to the snapdragon family and grows as what botanists call a forb – essentially a non-woody flowering plant that dies back to ground level each winter but returns faithfully each spring from its persistent root system.

What Makes It Special

Like most penstemons, Brandegee’s penstemon likely produces the characteristic tubular flowers that make this plant group so beloved by hummingbirds and native pollinators. These blooms typically appear in shades that complement the mountain landscape – think purples, blues, or crisp whites that stand out against rocky terrain.

The plant’s true appeal lies in its authenticity as a high-altitude native. When you grow Brandegee’s penstemon, you’re not just adding another pretty flower to your garden – you’re cultivating a piece of the American West’s mountain heritage.

A Word of Caution: Rarity Matters

Before you rush to plant this mountain beauty, there’s something important to know. Brandegee’s penstemon carries a conservation status that suggests it may be somewhat vulnerable in its native range. This means if you choose to grow it, you should only source plants or seeds from reputable native plant nurseries that propagate their stock responsibly rather than collecting from wild populations.

Is It Right for Your Garden?

Brandegee’s penstemon isn’t for every garden or every gardener. This mountain native has specific needs that reflect its high-altitude heritage:

  • Excellent drainage is absolutely essential – think rocky, gravelly soil
  • Full sun exposure mimicking its natural mountain habitat
  • Cooler temperatures and lower humidity than many lowland areas provide
  • Minimal summer water once established

This makes it an excellent candidate for rock gardens, alpine-style plantings, xeriscaping projects, and native plant gardens in appropriate climates. It’s particularly well-suited for gardeners in USDA hardiness zones 4-7 who want to create authentic high-country landscapes.

Growing Success Tips

Successfully growing Brandegee’s penstemon requires thinking like the mountain environments where it thrives:

  • Soil preparation: Create a well-draining mix with plenty of sand, gravel, or pumice
  • Planting location: Choose a spot with morning sun and good air circulation
  • Watering: Water deeply but infrequently, allowing soil to dry between waterings
  • Winter care: Provide good drainage to prevent winter rot

The Pollinator Connection

While specific wildlife data for this variety is limited, penstemons as a group are pollinator powerhouses. The tubular flowers are perfectly designed for hummingbirds, while native bees and butterflies also benefit from the nectar and pollen. By growing Brandegee’s penstemon, you’re supporting the same pollinators that have co-evolved with this plant in its mountain habitat.

The Bottom Line

Brandegee’s penstemon offers gardeners a chance to grow a true piece of the American mountain West, but it’s not a plant for casual cultivation. If you have the right conditions – excellent drainage, appropriate climate, and a commitment to responsible sourcing – this native gem can bring authentic high-country beauty to your landscape while supporting native pollinators.

Just remember: success with mountain natives often comes down to understanding that sometimes less is more. Give this plant the drainage it craves, resist the urge to overwater, and you might just discover why high-altitude gardening has its own special rewards.

Brandegee’s Penstemon

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 glaber Pursh - sawsepal penstemon

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