North America Native Plant

Showy Penstemon

Botanical name: Penstemon spectabilis subviscosus

USDA symbol: PESPS

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Penstemon spectabilis Thurb. ex A. Gray var. subviscosus (D.D. Keck) McMinn (PESPS3)   

Showy Penstemon: A California Native Worth Celebrating If you’re looking to add some authentic California charm to your garden, Penstemon spectabilis subviscosus might just be the native plant you’ve been searching for. This perennial beauty, commonly known as showy penstemon, represents a special piece of California’s natural heritage that deserves ...

Rare plant alert!

Region: Conservation status by state

Status: S4T2?: Status is uncertain but is somewhere between the following rankings: Inexact rank: ⚘ Subspecies or variety is imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 6 to 20 occurrences or few remaining individuals (1,000 to 3,000) ⚘ 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 ⚘

Showy Penstemon: A California Native Worth Celebrating

If you’re looking to add some authentic California charm to your garden, Penstemon spectabilis subviscosus might just be the native plant you’ve been searching for. This perennial beauty, commonly known as showy penstemon, represents a special piece of California’s natural heritage that deserves a spot in more native gardens.

What Makes This Plant Special?

Showy penstemon is a true California native, belonging to a group of plants that have called the Golden State home long before any of us arrived on the scene. As a perennial forb, this plant returns year after year without the woody stems of shrubs or trees, making it a reliable herbaceous addition to your landscape.

Botanically known as Penstemon spectabilis subviscosus, this plant has some scientific synonyms you might encounter, including Penstemon spectabilis Thurb. ex A. Gray var. subviscosus. But don’t let the fancy names intimidate you – at its heart, this is simply a beautiful native wildflower.

Where Does It Call Home?

This particular subspecies is endemic to California, making it a true Golden State exclusive. Its natural range is limited to specific areas within the state, which makes it all the more special for California gardeners who want to grow truly local plants.

A Word About Rarity

Here’s something important to know: showy penstemon has a conservation status of S4T2?, which indicates some level of conservation concern. While this shouldn’t scare you away from growing it, it does mean you should be thoughtful about your plant sources. Always purchase from reputable nurseries that grow their plants from ethically collected seeds or cuttings, rather than digging plants from the wild.

Why Consider Growing Showy Penstemon?

There are several compelling reasons to welcome this native into your garden:

  • It’s a true California native, supporting local ecosystems
  • As a perennial, it provides lasting value in your landscape
  • It contributes to biodiversity and conservation efforts
  • Once established, native plants typically require less water and maintenance than non-natives

The Reality of Growing This Beauty

We’ll be honest with you – detailed growing information for this specific subspecies is somewhat limited, which reflects its specialized nature. This isn’t necessarily a bad thing, but it does mean you might need to do some detective work or connect with local native plant societies for the most current growing wisdom.

As with most California natives, showy penstemon likely prefers well-draining soil and can handle dry conditions once established. The specific growing requirements, hardiness zones, and care instructions for this subspecies may vary from the more common varieties you’ll find information about online.

Getting Started

If you’re intrigued by showy penstemon, here’s how to move forward responsibly:

  • Contact local native plant nurseries that specialize in California flora
  • Reach out to your regional California Native Plant Society chapter
  • Ask specifically about Penstemon spectabilis subviscosus and its growing requirements
  • Ensure any plants you purchase are nursery-propagated, not wild-collected
  • Consider participating in seed collection events organized by conservation groups

The Bottom Line

Showy penstemon represents the kind of plant that makes native gardening exciting – it’s authentically local, ecologically valuable, and connects you to California’s natural heritage. While it may require a bit more effort to source and learn about compared to common garden center plants, that’s part of what makes growing it special.

By choosing to grow this California native, you’re not just adding a plant to your garden; you’re participating in conservation and supporting the unique ecosystems that make California special. Just remember to source responsibly and connect with local experts who can guide you toward success with this distinctive native gem.

Showy 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 spectabilis Thurb. ex A. Gray - showy penstemon

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