North America Native Plant

Klickitat Aster

Botanical name: Eucephalus glaucescens

USDA symbol: EUGL11

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Aster engelmannii (D.C. Eaton) A. Gray var. glaucescens A. Gray (ASENG2)  âš˜  Aster glaucescens (A. Gray) S.F. Blake (ASGL2)   

Klickitat Aster: A Rare Pacific Northwest Gem Worth Growing Meet the Klickitat aster, a charming native wildflower that’s as unique as its name suggests. This lesser-known member of the aster family (Eucephalus glaucescens) is a true Pacific Northwest original, offering gardeners a chance to grow something truly special while supporting ...

Rare plant alert!

Region: Conservation status by state

Status: S2S3: Status is uncertain but is somewhere between the following rankings: 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) ⚘ 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 ⚘

Klickitat Aster: A Rare Pacific Northwest Gem Worth Growing

Meet the Klickitat aster, a charming native wildflower that’s as unique as its name suggests. This lesser-known member of the aster family (Eucephalus glaucescens) is a true Pacific Northwest original, offering gardeners a chance to grow something truly special while supporting local ecosystems.

What Makes Klickitat Aster Special?

The Klickitat aster is a perennial forb—basically a fancy way of saying it’s an herbaceous flowering plant that comes back year after year without woody stems. Don’t let the technical term fool you; this is simply a delightful wildflower that produces clusters of small, daisy-like blooms in white to pale lavender. The flowers create a soft, naturalistic display that’s perfect for gardeners who prefer understated elegance over flashy showstoppers.

Where It Calls Home

This native beauty is found exclusively in Washington state, making it a true regional specialty. As its common name suggests, it’s particularly associated with the Klickitat area, though it can be found in other parts of the state as well.

A Word of Caution: Rarity Matters

Here’s something important to know: Klickitat aster has a conservation status of S2S3, which means it’s considered uncommon to rare in the wild. This makes it extra special, but it also means we need to be responsible about how we grow it. If you’re interested in adding this plant to your garden, make sure you source it from reputable native plant nurseries that propagate their own stock rather than collecting from wild populations.

Why Grow Klickitat Aster?

There are several compelling reasons to consider this native gem:

  • Pollinator magnet: Like many native asters, it attracts bees, butterflies, and other beneficial insects
  • Low maintenance: Once established, it’s quite drought tolerant and requires minimal care
  • Conservation value: Growing rare natives helps preserve genetic diversity
  • Regional authenticity: Perfect for Pacific Northwest native plant gardens
  • Naturalistic beauty: Adds subtle charm to wildflower meadows and natural landscapes

Perfect Garden Settings

Klickitat aster shines in several garden scenarios:

  • Native plant gardens celebrating Pacific Northwest flora
  • Rock gardens and well-drained slopes
  • Naturalized meadow areas
  • Wildlife gardens focused on supporting local pollinators
  • Dry gardens and xeriscapes

Growing Conditions and Care

The good news is that Klickitat aster isn’t particularly fussy once you understand its preferences:

Sunlight: Thrives in full sun to partial shade, though full sun typically produces the best flowering.

Soil: Well-draining soil is absolutely essential. This plant doesn’t appreciate wet feet, so avoid heavy clay or areas where water tends to sit.

Water: Drought tolerant once established, but will benefit from occasional deep watering during extended dry periods in its first year.

Hardiness: Suitable for USDA zones 5-8, making it perfect for most Pacific Northwest gardens.

Planting and Care Tips

  • Plant in spring after the last frost for best establishment
  • Space plants according to their mature size to allow for good air circulation
  • Mulch lightly around plants to retain moisture and suppress weeds
  • Avoid overwatering—this is a less is more kind of plant
  • Deadhead spent flowers if you prefer a tidier look, or leave them for wildlife
  • Allow natural self-seeding if you want to expand your colony

Supporting Conservation Through Gardening

By choosing to grow Klickitat aster in your garden, you’re doing more than just adding another pretty flower. You’re participating in conservation efforts that help preserve rare native species for future generations. Just remember to source your plants responsibly from nurseries that propagate rather than wild-collect their stock.

This charming aster may not be the loudest voice in your garden choir, but it adds a distinctive note that’s both beautiful and meaningful. For Pacific Northwest gardeners looking to create authentic native landscapes while supporting conservation, Klickitat aster is definitely worth seeking out.

Klickitat Aster

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

Asterales

Family

Asteraceae Bercht. & J. Presl - Aster family

Genus

Eucephalus Nutt. - aster

Species

Eucephalus glaucescens (A. Gray) Greene - Klickitat aster

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