North America Native Plant

Finetooth Beardtongue

Botanical name: Penstemon subserratus

USDA symbol: PESU6

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Finetooth Beardtongue: A Pacific Northwest Native Worth Growing If you’re looking to add some native flair to your Pacific Northwest garden, let me introduce you to finetooth beardtongue (Penstemon subserratus). This charming perennial might not have the flashiest name, but it’s a real gem for gardeners who want to support ...

Rare plant alert!

Region: Conservation status by state

Status: S3S4: 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 ⚘ 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 ⚘

Finetooth Beardtongue: A Pacific Northwest Native Worth Growing

If you’re looking to add some native flair to your Pacific Northwest garden, let me introduce you to finetooth beardtongue (Penstemon subserratus). This charming perennial might not have the flashiest name, but it’s a real gem for gardeners who want to support local wildlife while enjoying beautiful blooms.

What Is Finetooth Beardtongue?

Finetooth beardtongue is a native perennial herb that calls the Pacific Northwest home. As a member of the Penstemon family, it’s what botanists call a forb – basically a non-woody plant that comes back year after year. Think of it as the reliable friend in your garden who shows up every spring without fail.

This native beauty is found naturally in Oregon and Washington, where it thrives in meadows and open woodland areas. It’s perfectly adapted to the region’s climate and growing conditions, making it an excellent choice for gardeners who want plants that actually belong in their landscape.

Why You Should Consider Growing It

Here’s where finetooth beardtongue really shines – it’s a pollinator magnet! Those tubular purple to blue flowers are like little landing pads for bees and butterflies, while hummingbirds absolutely love diving into them for nectar. If you’re trying to create a wildlife-friendly garden, this plant is definitely worth considering.

From a design perspective, finetooth beardtongue adds lovely vertical interest to your garden with its tall flower spikes. It blooms from late spring into early summer, providing color when many other natives are just getting started.

A Word About Conservation

Before you rush out to plant this beauty, there’s something important to know: finetooth beardtongue has a conservation status that indicates it may be somewhat uncommon in parts of its range. This doesn’t mean you shouldn’t grow it – quite the opposite! Growing native plants in gardens can actually help support their populations.

However, it does mean you should be thoughtful about where you source your plants. Always buy from reputable nurseries that propagate their plants rather than collecting from the wild. Never dig up plants from natural areas.

Perfect Garden Situations

Finetooth beardtongue works beautifully in several garden styles:

  • Native plant gardens where it can mingle with other Pacific Northwest natives
  • Pollinator gardens where its nectar-rich flowers support local wildlife
  • Drought-tolerant landscapes once it’s established
  • Naturalized meadow areas where it can spread and self-seed
  • Wildlife gardens focused on supporting local ecosystems

Growing Conditions and Care

One of the best things about growing native plants is that they’re already adapted to your local conditions. Finetooth beardtongue is generally hardy in USDA zones 5-8, which covers most of the Pacific Northwest perfectly.

Here’s what this plant prefers:

  • Sunlight: Full sun to partial shade – it’s pretty flexible
  • Soil: Well-draining soil is crucial; it doesn’t like wet feet
  • Water: Moderate water during establishment, then quite drought tolerant
  • Maintenance: Low maintenance once established

Planting and Care Tips

Plant your finetooth beardtongue in spring after the last frost. Make sure you choose a spot with good drainage – this is really the most important factor for success. If you have heavy clay soil, consider amending it with compost or planting in a raised area.

During the first year, give your plants regular water to help them establish a good root system. After that, they should be quite drought tolerant and won’t need much supplemental watering except during particularly dry spells.

Deadheading spent flowers can encourage more blooms, but if you want the plant to self-seed (and potentially provide food for birds), leave some seed heads at the end of the season.

Supporting Your Local Ecosystem

By choosing finetooth beardtongue for your garden, you’re doing more than just adding a pretty plant – you’re supporting your local ecosystem. Native plants have co-evolved with local wildlife over thousands of years, creating relationships that benefit both plants and animals.

The tubular flowers are perfectly shaped for hummingbird beaks, while various native bees and butterflies also visit for nectar. Even after the blooms fade, the plant continues to provide value as seeds for birds and shelter for beneficial insects.

The Bottom Line

Finetooth beardtongue might not be the showiest plant in your garden, but it’s definitely one of the most valuable from an ecological perspective. It’s relatively easy to grow, supports local wildlife, and adds authentic Pacific Northwest character to your landscape.

Just remember to source your plants responsibly from reputable nurseries, and you’ll be contributing to both your garden’s beauty and your region’s biodiversity. Sometimes the best garden choices are the ones that have been quietly thriving in your area for centuries – they just needed an invitation to join your backyard party!

Finetooth 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 subserratus Pennell - finetooth beardtongue

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