North America Native Plant

Kass’ Draba

Botanical name: Draba kassii

USDA symbol: DRKA3

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Kass’ Draba: A Rare Utah Treasure Worth Protecting Meet Kass’ draba (Draba kassii), one of Utah’s most exclusive native plants – and when I say exclusive, I mean it! This tiny perennial forb is so rare that it’s found nowhere else in the world except within Utah’s borders. If plants ...

Rare plant alert!

Region: Conservation status by state

Status: S1: Status is uncertain but is somewhere between the following rankings: Critically Imperiled: Extremely rare due to factor(s) making it especially vulnerable to extinction. Typically 5 or fewer occurrences or very few remaining individuals (<1,000) ⚘

Kass’ Draba: A Rare Utah Treasure Worth Protecting

Meet Kass’ draba (Draba kassii), one of Utah’s most exclusive native plants – and when I say exclusive, I mean it! This tiny perennial forb is so rare that it’s found nowhere else in the world except within Utah’s borders. If plants had VIP status, this little mustard family member would definitely have the platinum membership.

A True Utah Original

Kass’ draba is a native species that calls only Utah home, making it what botanists call an endemic plant. This means if you want to see this species in the wild, you’ll need to plan a trip to the Beehive State – though actually finding it might prove quite the challenge given its extreme rarity.

Rarity Alert: Handle with Extreme Care

Here’s where things get serious: Draba kassii holds a Global Conservation Status of S1, which translates to Critically Imperiled. This classification means there are typically five or fewer known populations, with fewer than 1,000 individual plants remaining in the wild. To put this in perspective, this plant is rarer than many animals we consider endangered.

If you’re considering growing Kass’ draba, please proceed with the utmost responsibility. Only source seeds or plants from reputable native plant suppliers who can guarantee the material wasn’t collected from wild populations. Better yet, consider supporting conservation efforts for this species rather than attempting to cultivate it.

What Does Kass’ Draba Look Like?

As a member of the mustard family (Brassicaceae), Kass’ draba likely shares the typical characteristics of its draba cousins:

  • Small, low-growing perennial forb
  • Tiny white flowers arranged in clusters
  • Herbaceous growth habit without woody stems
  • Compact rosette form typical of alpine and desert species

Growing Conditions and Care

While specific growing requirements for Draba kassii aren’t well-documented due to its rarity, we can make educated guesses based on its Utah habitat and related species:

  • Likely prefers well-draining, rocky soils
  • Probably adapted to alkaline conditions typical of Utah’s geology
  • May require cold winter temperatures for proper growth cycles
  • Potentially suitable for USDA hardiness zones 4-7
  • Probably drought-tolerant once established

Garden Role and Landscape Use

Given its critical conservation status, Kass’ draba isn’t really suitable for typical garden use. If you’re interested in supporting this species, consider:

  • Participating in botanical garden conservation programs
  • Supporting habitat preservation efforts in Utah
  • Growing related, less rare draba species as alternatives
  • Contributing to citizen science projects that monitor rare plant populations

Conservation Over Cultivation

While it’s natural for plant enthusiasts to want to grow rare and unique species, sometimes the best thing we can do is admire from afar and support conservation efforts. Kass’ draba represents Utah’s unique botanical heritage, and its survival depends on protecting its remaining wild populations.

If you’re drawn to the idea of growing rare Utah natives, consider working with local botanical gardens, universities, or conservation organizations that may have legitimate propagation programs for this species. Your gardening energy might be better directed toward growing other Utah natives that aren’t teetering on the edge of extinction.

The Bottom Line

Kass’ draba is a botanical treasure that deserves our respect and protection rather than our trowels and watering cans. While it would undoubtedly make a fascinating addition to a specialized rock garden or alpine collection, its extreme rarity means it’s better left to conservation professionals. Instead, celebrate this unique species by supporting the organizations working to ensure it doesn’t disappear forever from Utah’s remarkable landscape.

Kass’ Draba

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Dilleniidae

Order

Capparales

Family

Brassicaceae Burnett - Mustard family

Genus

Draba L. - draba

Species

Draba kassii S.L. Welsh - Kass' draba

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