North America Native Plant

Slender Hawkweed

Botanical name: Hieracium gracile var. gracile

USDA symbol: HIGRG

Life cycle: perennial

Habit: forb

Native status: Native to Alaska ⚘ Native to the lower 48 states  

Synonyms: Chlorocrepis tristis (Willd. ex Spreng.) Á. Löve & D. Löve ssp. gracilis (Hook.) W.A. Weber (CHTRG)  ⚘  Hieracium gracile Hook. var. densifloccosum (Zahn) Cronquist (HIGRD2)  ⚘  Hieracium triste Willd. ex Spreng. ssp. gracile (Hook.) Calder & Roy L. Taylor (HITRG)  ⚘  Hieracium triste Willd. ex Spreng. var. gracile (Hook.) A. Gray (HITRG2)   

Slender Hawkweed: A Native Wildflower for Western Gardens If you’re looking to add authentic native character to your garden, slender hawkweed (Hieracium gracile var. gracile) might just be the understated wildflower you didn’t know you needed. This perennial native has quietly made its home across much of western North America, ...

Slender Hawkweed: A Native Wildflower for Western Gardens

If you’re looking to add authentic native character to your garden, slender hawkweed (Hieracium gracile var. gracile) might just be the understated wildflower you didn’t know you needed. This perennial native has quietly made its home across much of western North America, and while it may not be the showiest plant in your garden, it brings that genuine wild feeling that cultivated plants often can’t replicate.

What Exactly Is Slender Hawkweed?

Slender hawkweed belongs to the hawkweed family, a group of plants known for their dandelion-like flowers and somewhat weedy reputation. But don’t let that fool you – this particular variety is a legitimate native wildflower, not an invasive troublemaker. As a perennial forb (basically a non-woody flowering plant), it lacks significant woody growth and maintains its growing points at or below ground level, allowing it to return year after year.

This plant has quite the collection of scientific aliases, having been shuffled around taxonomically over the years. You might encounter it listed under various synonyms in older field guides or botanical references, but Hieracium gracile var. gracile is the currently accepted name.

Where Does It Call Home?

Slender hawkweed is truly a western North American native, naturally occurring from Alaska all the way down through much of the western United States. You’ll find it growing wild in Alaska, California, Colorado, Idaho, Montana, New Mexico, Oregon, Utah, Washington, and Wyoming. This impressive range suggests it’s quite adaptable to different conditions within its native territory.

Should You Grow It in Your Garden?

Here’s where things get a bit tricky – while slender hawkweed is undoubtedly native and potentially valuable for wildlife, it’s not exactly what you’d call a well-documented garden plant. This variety seems to prefer staying in its wild mountain and alpine habitats rather than making the jump to cultivation.

Reasons you might want to grow it:

  • It’s genuinely native to a large portion of western North America
  • As a member of the sunflower family, it likely provides some pollinator benefits
  • It adds authentic wildness to naturalized areas
  • Being perennial, it should return year after year once established

Potential challenges:

  • Very limited information available about cultivation requirements
  • Seeds or plants may be difficult to source commercially
  • Growth habits and mature size are not well documented for garden planning
  • May be quite particular about its growing conditions

Growing Conditions and Care

Since specific cultivation information for slender hawkweed is scarce, we have to make some educated guesses based on its natural habitat. Given its wide distribution across mountainous western regions, it likely prefers:

  • Well-draining soils (mountain plants rarely tolerate soggy conditions)
  • Full to partial sun exposure
  • Cooler temperatures, especially during summer
  • Possibly alkaline or neutral soil pH
  • Lower humidity levels typical of western climates

The USDA hardiness zones for this variety aren’t specifically documented, but given its presence in Alaska and high-elevation western areas, it’s likely quite cold-hardy.

The Bottom Line

Slender hawkweed represents one of those interesting native plants that hasn’t made the leap from wildland to garden center. If you’re passionate about growing truly native species and don’t mind a bit of uncertainty, it could be worth tracking down. However, if you’re looking for reliable native alternatives with better-known growing requirements, consider other native wildflowers from your region that offer similar ecological benefits with more predictable results.

For most gardeners, this might be a plant better appreciated in its natural habitat during hiking trips rather than coaxed into backyard cultivation. But for the truly adventurous native plant enthusiast with access to responsibly sourced seeds or plants, it could be an interesting addition to a specialized wildflower meadow or naturalized area.

Slender Hawkweed

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 gracile Hook. - slender hawkweed

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