Native Plants

Villous Woodyaster

Xylorhiza glabriuscula var. villosa

USDA symbol: XYGLV

perennial subshrub

Lower 48 states: native

Meet the villous woodyaster (Xylorhiza glabriuscula var. villosa), a charming perennial wildflower that calls the high country of Colorado and Wyoming home. This lesser-known member of the aster family might just be the perfect addition to your native plant garden – if you can find it responsibly sourced, that is. ...

Villous Woodyaster may be listed as rare in your area.
Global Conservation Status

Status: S4T2T4 | Subspecies or varieties apparently secure: Uncommon but not rare, and usually widespread. Possible cause for longterm concern. Typically more than 100 occurrences or more than 10,000 individuals.

Villous Woodyaster: A Hidden Gem of the Rocky Mountain West

Meet the villous woodyaster (Xylorhiza glabriuscula var. villosa), a charming perennial wildflower that calls the high country of Colorado and Wyoming home. This lesser-known member of the aster family might just be the perfect addition to your native plant garden – if you can find it responsibly sourced, that is.

What Makes Villous Woodyaster Special?

Don’t let the somewhat intimidating botanical name fool you – this is simply a delightful native perennial that belongs to the woodyaster genus. As a forb (think of it as a non-woody flowering plant), villous woodyaster brings that classic daisy-like charm we all love in asters, but with its own unique Rocky Mountain personality.

You might also see this plant referenced by its scientific synonyms, including Machaeranthera glabriuscula var. villosa or Xylorhiza villosa, but they’re all referring to the same wonderful plant.

Where Does It Call Home?

This native beauty has a pretty exclusive zip code – you’ll find it naturally growing in Colorado and Wyoming, where it’s adapted to the challenging conditions of the American West. It’s a true child of the Rockies, evolved to handle the unique climate and growing conditions of this spectacular region.

  • Species observed
  • No observations

Should You Grow Villous Woodyaster?

Here’s where things get a bit complicated, and we need to talk about conservation. Villous woodyaster has a Global Conservation Status of S4T2T4, which indicates it may face some conservation concerns. This means that while it’s not critically endangered, it’s not exactly common either.

If you’re considering adding this plant to your garden, please only source it from reputable native plant nurseries that propagate their stock responsibly. Never collect plants from the wild – this can harm already vulnerable populations.

Why Choose Villous Woodyaster?

If you can source it responsibly, here’s why villous woodyaster might win your heart:

  • It’s a true native that supports local ecosystems
  • As a perennial, it comes back year after year once established
  • It’s perfectly adapted to Rocky Mountain growing conditions
  • You’ll be growing something truly special and regionally appropriate

Growing Conditions and Care

While specific growing information for this variety is limited, woodyasters generally prefer the kinds of conditions they’ve evolved with in their native Rocky Mountain habitat. Think well-draining soils, plenty of sunshine, and the ability to handle temperature swings that come with high-altitude living.

Since detailed growing requirements for this specific variety aren’t widely documented, your best bet is to:

  • Consult with local native plant societies in Colorado or Wyoming
  • Contact your local Cooperative Extension office for region-specific advice
  • Connect with specialized native plant nurseries that may have experience with this variety

The Bottom Line

Villous woodyaster represents something special – a piece of Rocky Mountain heritage that deserves our respect and careful stewardship. While it might not be the easiest native plant to find or grow, it offers the satisfaction of nurturing something truly unique to the American West.

If you’re passionate about native plants and committed to responsible gardening practices, villous woodyaster could be a meaningful addition to your collection. Just remember: source responsibly, garden thoughtfully, and help preserve these botanical treasures for future generations to enjoy.

Can’t find villous woodyaster from responsible sources? Consider other native asters and wildflowers from your region that can provide similar ecological benefits while being more readily available through sustainable channels.

Xylorhiza glabriuscula var. villosa is also known as...

Often we refer to plants by their common names. When shopping for plants the scientific name is the best way to positively identify the plant species you desire. But some plants have more than one name! While it doesn't happen often, nurseries might display one name while you're searching for another. Xylorhiza glabriuscula var. villosa is also known as:

Machaeranthera glabriuscula Cronquist & Keck var. villosa | USDA symbol: MAGLV2
Xylorhiza villosa | USDA symbol: XYVI

Why do some plants have more than one name? Over time plant species may be renamed for a few reasons:

  1. Botanists in different regions named the same plant without knowing it had already been classified.
  2. A species was reclassified after scientific advances in, for example, DNA analysis.
  3. Slight variations within a species are sometimes mistakenly identified as entirely new species.

Classification

Group: Dicot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Magnoliopsida - Dicotyledons
Subclass: Asteridae
Order: Asterales
Family: Asteraceae Bercht. & J. Presl - Aster family
Genus: Xylorhiza Nutt. - woodyaster

Species: Xylorhiza glabriuscula Nutt. - smooth woodyaster

Variety: Xylorhiza glabriuscula Nutt. var. villosa (Nutt.) A. Nelson - villous woodyaster

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