North America Native Plant

Scouler’s Woollyweed

Botanical name: Hieracium scouleri var. nudicaule

USDA symbol: HISCN

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Hieracium cynoglossoides Arv.-Touv. var. nudicaule A. Gray (HICYN)  âš˜  Hieracium nudicaule (A. Gray) A. Heller (HINU)   

Scouler’s Woollyweed: A Rare Native Wildflower Worth Knowing About If you’ve never heard of Scouler’s woollyweed, you’re definitely not alone! This little-known native wildflower (Hieracium scouleri var. nudicaule) is one of those fascinating plants that reminds us just how much botanical diversity exists right under our noses—even if we rarely ...

Scouler’s Woollyweed: A Rare Native Wildflower Worth Knowing About

If you’ve never heard of Scouler’s woollyweed, you’re definitely not alone! This little-known native wildflower (Hieracium scouleri var. nudicaule) is one of those fascinating plants that reminds us just how much botanical diversity exists right under our noses—even if we rarely get to see it.

What Exactly Is Scouler’s Woollyweed?

Scouler’s woollyweed is a perennial forb, which is botanist-speak for a soft-stemmed plant that comes back year after year. Unlike woody shrubs or trees, this plant stays relatively low and herbaceous, with all its growing points either at or below ground level—a clever strategy for surviving tough conditions.

This particular variety belongs to the hawkweed family, and like its relatives, it’s built for persistence. The woollyweed part of its name likely refers to the fuzzy, hair-like structures that many plants in this family sport as protection against harsh weather and hungry insects.

Where Does It Call Home?

Scouler’s woollyweed is a true westerner, native to five states across the American West: California, Idaho, Nevada, Oregon, and Washington. This distribution suggests it’s adapted to the diverse climates and conditions found throughout the western United States, from coastal regions to inland mountains.

The Challenge of Growing Rare Natives

Here’s where things get interesting—and a bit challenging. Scouler’s woollyweed falls into that category of native plants that are so specialized or uncommon that very little information exists about growing them in garden settings. This presents both an opportunity and a dilemma for native plant enthusiasts.

Why Consider Lesser-Known Natives?

Even though we can’t offer you a detailed growing guide for this particular plant, there are compelling reasons to appreciate and seek out rare native varieties:

  • They support local ecosystems in ways we’re still discovering
  • They’re perfectly adapted to regional conditions
  • They add unique character to native plant gardens
  • Growing them helps preserve genetic diversity

A Word of Caution

If you’re lucky enough to encounter Scouler’s woollyweed in the wild or find it available from a specialty native plant nursery, approach it with respect. Always source native plants responsibly—never collect from wild populations, and only purchase from reputable nurseries that propagate their own stock.

Alternatives and Related Plants

While you might not be able to easily find Scouler’s woollyweed for your garden, there are other native hawkweeds and similar wildflowers that could fill a similar ecological niche. Consider researching other native forbs from your specific region that offer comparable benefits to local wildlife and pollinators.

The Bigger Picture

Plants like Scouler’s woollyweed remind us that native plant gardening isn’t just about the popular, well-known species. Every region has its botanical treasures—some common, some rare, and some (like this one) existing quietly in specialized habitats, waiting for botanists and gardeners to better understand their needs and potential.

While we may not have all the answers about growing this particular variety, its existence enriches our understanding of western North American flora and highlights the incredible diversity that native plant gardening can celebrate and preserve.

Scouler’s Woollyweed

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

Hieracium L. - hawkweed

Species

Hieracium scouleri Hook. - Scouler's woollyweed

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