North America Native Plant

Henrieville Woodyaster

Botanical name: Xylorhiza confertifolia

USDA symbol: XYCO3

Life cycle: perennial

Habit: subshrub

Native status: Native to the lower 48 states  

Synonyms: Machaeranthera confertifolia (Cronquist) Cronquist (MACO30)  âš˜  Machaeranthera glabriuscula (Nutt.) Cronquist & D.D. Keck var. confertifolia Cronquist (MAGLC)   

Henrieville Woodyaster: A Hidden Gem for Utah Native Plant Enthusiasts If you’re passionate about growing truly local native plants and love the charm of daisy-like flowers, the Henrieville woodyaster (Xylorhiza confertifolia) might just be the perfect addition to your Utah garden. This lesser-known perennial herb brings authentic regional character to ...

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 ⚘

Henrieville Woodyaster: A Hidden Gem for Utah Native Plant Enthusiasts

If you’re passionate about growing truly local native plants and love the charm of daisy-like flowers, the Henrieville woodyaster (Xylorhiza confertifolia) might just be the perfect addition to your Utah garden. This lesser-known perennial herb brings authentic regional character to native landscapes while supporting local ecosystems.

What Makes Henrieville Woodyaster Special?

The Henrieville woodyaster is a native perennial forb that belongs to the aster family. Unlike woody shrubs or trees, this plant maintains a herbaceous growth habit, meaning it lacks significant woody tissue above ground. What it lacks in size, it makes up for in authentic local appeal and ecological value.

You might also encounter this plant listed under its synonyms Machaeranthera confertifolia or Machaeranthera glabriuscula var. confertifolia in older botanical references, but Xylorhiza confertifolia is the current accepted name.

Where Does It Naturally Grow?

This special plant is endemic to Utah, making it a true local native. It’s naturally found in the Colorado Plateau region of southern Utah, where it has adapted to the area’s unique climate and soil conditions over thousands of years.

Garden Appeal and Landscape Role

Henrieville woodyaster produces charming daisy-like flowers with white to pale purple petals surrounding bright yellow centers. The blooms may be small, but they pack plenty of authentic regional character. This compact perennial works beautifully in:

  • Native plant gardens focused on Utah species
  • Rock gardens and xeriscaping projects
  • Desert-themed landscapes
  • Educational native plant collections

Supporting Local Wildlife

As a member of the aster family, Henrieville woodyaster attracts native bees and other small pollinators when it blooms. By growing this plant, you’re providing authentic habitat and food sources that local wildlife have co-evolved with over millennia.

Growing Conditions and Care

This Utah native is well-adapted to the region’s challenging growing conditions. Here’s what it needs to thrive:

  • Sunlight: Full sun exposure
  • Soil: Well-draining soils; tolerates poor, rocky, or sandy conditions
  • Water: Low water requirements once established; drought tolerant
  • Hardiness: Hardy in USDA zones 4-8

Planting and Care Tips

The key to success with Henrieville woodyaster is mimicking its natural habitat:

  • Plant in spring after the last frost
  • Ensure excellent drainage to prevent root rot
  • Water regularly the first growing season, then reduce frequency
  • Avoid overwatering – this plant prefers to stay on the dry side
  • No fertilizer needed; it’s adapted to poor soils
  • Minimal maintenance required once established

Important Conservation Considerations

Before adding Henrieville woodyaster to your garden, it’s important to know that this plant has a conservation status of S2S3, which suggests it may be uncommon to rare in its natural range. This makes it even more special for native plant gardens, but also means we need to be responsible about how we source it.

If you decide to grow this unique Utah native, please ensure you obtain plants or seeds from reputable native plant nurseries or conservation organizations that use responsibly sourced material. Never collect plants or seeds from wild populations, as this can harm already vulnerable native stands.

Is Henrieville Woodyaster Right for Your Garden?

This plant is perfect for gardeners who want to grow authentically local species and support regional biodiversity. It’s especially appealing if you’re creating a specialized Utah native garden or working on xeriscaping projects. However, because of its potential rarity, it’s best suited for dedicated native plant enthusiasts who can commit to sourcing it responsibly and giving it the specialized care it deserves.

While Henrieville woodyaster might not be the showiest plant in your garden, it offers something invaluable: a direct connection to Utah’s unique natural heritage and a chance to support truly local wildlife in your own backyard.

Henrieville 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 confertifolia (Cronquist) T.J. Watson - Henrieville woodyaster

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