North America Native Plant

Smooth Woodyaster

Botanical name: Xylorhiza glabriuscula var. glabriuscula

USDA symbol: XYGLG

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Aster glabriuscula (Nutt.) Torr. & A. Gray (ASGL9)  âš˜  Aster glabriuscula (Nutt.) Torr. & A. Gray var. parryi (A. Gray) Onno (ASGLP2)  âš˜  Aster parryi A. Gray (ASPA21)  âš˜  Aster xylorhiza (Nutt.) Torr. & A. Gray (ASXY)  âš˜  Machaeranthera glabriuscula (Nutt.) Cronquist & D.D. Keck (MAGL7)   

Smooth Woodyaster: A Hardy Native Wildflower for Western Gardens If you’re looking for a tough-as-nails native wildflower that can handle whatever Mother Nature throws at it, meet the smooth woodyaster (Xylorhiza glabriuscula var. glabriuscula). This unassuming perennial might not win any beauty contests at first glance, but don’t let its ...

Smooth Woodyaster: A Hardy Native Wildflower for Western Gardens

If you’re looking for a tough-as-nails native wildflower that can handle whatever Mother Nature throws at it, meet the smooth woodyaster (Xylorhiza glabriuscula var. glabriuscula). This unassuming perennial might not win any beauty contests at first glance, but don’t let its humble appearance fool you – this little powerhouse is exactly what your water-wise garden has been missing.

What Makes Smooth Woodyaster Special?

Smooth woodyaster is a true American native, calling the western United States home for thousands of years. As a perennial forb (that’s garden-speak for a non-woody flowering plant), it comes back year after year without any fuss from you. The plant produces charming daisy-like flowers in shades of purple to lavender with bright yellow centers, creating a delightful prairie-style display from spring through early summer.

Where Does It Grow Naturally?

This hardy native has claimed its territory across five western states: Colorado, Montana, South Dakota, Utah, and Wyoming. It thrives in the high plains and intermountain regions where many other plants struggle to survive.

Why Your Garden Will Love Smooth Woodyaster

Here’s where this plant really shines – it’s practically maintenance-free once established. If you’re tired of babying high-maintenance plants, smooth woodyaster is your new best friend. Here’s what makes it such a garden winner:

  • Extremely drought tolerant once established
  • Thrives in poor soils where other plants struggle
  • Attracts beneficial pollinators like native bees and butterflies
  • Perfect for xeriscaping and water-wise landscapes
  • Hardy in USDA zones 3-7, handling both brutal winters and hot summers
  • Adds authentic native character to any landscape

Perfect Garden Companions

Smooth woodyaster plays well with others, especially in native plant gardens, rock gardens, and naturalized areas. It’s an excellent choice for creating that authentic prairie or high desert look without the high water bills. Pair it with other drought-tolerant natives for a landscape that’s both beautiful and environmentally responsible.

Growing Smooth Woodyaster Successfully

The beauty of this plant lies in its simplicity. Here’s how to keep your smooth woodyaster happy:

Planting Requirements

  • Sunlight: Full sun is essential – this plant loves to bask in bright light
  • Soil: Well-draining soil is crucial; it actually prefers poor to average soils
  • Water: Once established, it’s remarkably drought tolerant
  • Spacing: Give plants adequate room for air circulation

Care and Maintenance

Here’s the best part – smooth woodyaster is wonderfully low-maintenance. Avoid the temptation to overwater or over-fertilize, as this tough native actually performs better with a little neglect. The key is to mimic its natural habitat: lean soils, plenty of sunshine, and minimal interference.

Is Smooth Woodyaster Right for Your Garden?

This native wildflower is ideal if you’re looking to create a sustainable, low-water landscape that supports local wildlife. It’s particularly perfect for gardeners in its native range who want to grow plants that naturally belong in their ecosystem. While it may not provide the showy blooms of hybrid garden varieties, it offers something far more valuable – a reliable, authentic native presence that will thrive for years with minimal care.

If you’re ready to embrace native gardening and want a plant that truly embodies the work smarter, not harder philosophy, smooth woodyaster deserves a spot in your garden. Your local pollinators (and your water bill) will thank you!

Smooth Woodyaster

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

Xylorhiza Nutt. - woodyaster

Species

Xylorhiza glabriuscula Nutt. - smooth woodyaster

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