North America Native Plant

Rough Hawkweed

Botanical name: Hieracium scabrum var. intonsum

USDA symbol: HISCI

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Rough Hawkweed: A Rare Native Wildflower Worth Protecting If you’re passionate about native plants and conservation, you might be intrigued by rough hawkweed (Hieracium scabrum var. intonsum). This lesser-known variety of a native wildflower represents the kind of botanical treasure that makes native gardening so rewarding – and so important ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2T4: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is 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) ⚘ Subspecies or varieties is apparently secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the region or more than 10,000 individuals ⚘ Secure: At very low or no risk of extinction in the jurisdiction due to a very extensive range, abundant populations or occurrences, with little to no concern from declines or threats. ⚘

Rough Hawkweed: A Rare Native Wildflower Worth Protecting

If you’re passionate about native plants and conservation, you might be intrigued by rough hawkweed (Hieracium scabrum var. intonsum). This lesser-known variety of a native wildflower represents the kind of botanical treasure that makes native gardening so rewarding – and so important for biodiversity.

What Is Rough Hawkweed?

Rough hawkweed is a native perennial forb, meaning it’s an herbaceous plant without woody stems that comes back year after year. As a member of the hawkweed family, it likely produces the characteristic yellow, dandelion-like flowers that make these plants recognizable, though this particular variety is quite specialized and not commonly documented in typical gardening resources.

Where Does It Grow Naturally?

This native wildflower has a relatively limited natural range, found only in Arkansas, Illinois, Iowa, and Missouri. Its restricted distribution makes it a true regional specialty – a plant that evolved to thrive in the specific conditions of the American Midwest.

A Plant of Conservation Concern

Here’s where things get interesting (and important): Hieracium scabrum var. intonsum has a conservation status that suggests it may be uncommon to rare. This isn’t just another native plant – it’s one that needs our attention and care to ensure it doesn’t disappear from the landscape.

If you’re considering adding this plant to your garden, it’s crucial to source it responsibly. Never collect plants from the wild, and only purchase from reputable native plant nurseries that can verify their stock comes from ethical propagation rather than wild collection.

Growing Rough Hawkweed: What We Know

Since this is a specialized variety with limited documentation, growing information is somewhat scarce. However, based on related hawkweed species and its native range, here’s what gardeners should know:

  • Hardiness: Likely suitable for USDA zones 4-7, matching its Midwest native range
  • Growing conditions: Probably prefers well-drained soils and full to partial sun, typical of prairie and woodland edge species
  • Garden role: Best suited for native plant gardens, prairie restorations, or specialized wildflower collections
  • Maintenance: As a native perennial, likely low-maintenance once established

Is This Plant Right for Your Garden?

Honestly? Rough hawkweed variety intonsum probably isn’t the right choice for most home gardeners. Its rarity means it’s likely not available through typical nursery channels, and its specialized nature suggests it may have very specific growing requirements.

However, if you’re:

  • A serious native plant collector
  • Working on prairie or ecosystem restoration
  • Passionate about plant conservation
  • Located within its native range

Then this plant might be worth seeking out – but only from responsible sources that can guarantee ethical propagation.

Better Alternatives for Most Gardens

If you love the idea of native hawkweeds but want something more readily available, consider looking for the more common Hieracium scabrum (the main species without the variety designation) or other native wildflowers from your region that offer similar ecological benefits with better availability.

Your local native plant society or extension office can help you identify native alternatives that provide habitat for local wildlife while being more practical for home cultivation.

The Bottom Line

Rough hawkweed variety intonsum represents the fascinating diversity hidden within our native flora. While it may not be the easiest plant to grow or find, it reminds us why protecting and understanding our native species matters. Sometimes the most valuable plants aren’t the showiest ones – they’re the quiet specialists that make our ecosystems complete.

If you do encounter this plant in the wild or find it through conservation channels, treat it with the respect it deserves as a rare piece of our natural heritage. And remember: the best way to support rare native plants is often to protect their wild habitats rather than trying to cultivate them in our gardens.

Rough 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 scabrum Michx. - rough hawkweed

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