North America Native Plant

Western Sweetvetch

Botanical name: Hedysarum occidentale var. canone

USDA symbol: HEOCC

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Western Sweetvetch: A Rare Native Gem for Mountain Gardeners If you’re a gardener who loves discovering uncommon native plants, western sweetvetch (Hedysarum occidentale var. canone) might just capture your attention. This perennial forb represents one of nature’s more elusive treasures, quietly thriving in the mountain regions of Colorado and Utah. ...

Rare plant alert!

Region: Conservation status by state

Status: S5T2: 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) ⚘ 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. ⚘

Western Sweetvetch: A Rare Native Gem for Mountain Gardeners

If you’re a gardener who loves discovering uncommon native plants, western sweetvetch (Hedysarum occidentale var. canone) might just capture your attention. This perennial forb represents one of nature’s more elusive treasures, quietly thriving in the mountain regions of Colorado and Utah.

What Makes Western Sweetvetch Special

Western sweetvetch belongs to the legume family and grows as a herbaceous perennial forb. Unlike woody shrubs or trees, this plant lacks significant woody tissue and maintains its life cycle through underground parts that survive winter conditions. As a native species to the lower 48 states, it has evolved perfectly to thrive in its natural mountain habitat.

Where You’ll Find This Mountain Native

This variety of western sweetvetch calls the mountainous regions of Colorado and Utah home. Its limited geographic distribution makes it a truly regional specialty plant that’s perfectly adapted to the unique growing conditions of these western mountain environments.

A Word of Caution: Rarity Matters

Before you get too excited about adding western sweetvetch to your garden, there’s something important to know. This plant carries a Global Conservation Status of S5T2, indicating it’s uncommon to rare in its natural range. This means that if you’re interested in growing western sweetvetch, you’ll need to be extra responsible about your plant sources.

Here’s what this means for gardeners:

  • Only purchase from reputable native plant nurseries that ethically propagate their stock
  • Never collect plants or seeds from wild populations
  • Consider this plant only if you’re committed to conservation-minded gardening

Growing Western Sweetvetch: What We Know

While detailed growing information for this specific variety is limited due to its rarity, we do know it’s adapted to the mountain conditions of Colorado and Utah. As a perennial forb, it likely prefers well-draining soils and can handle the temperature fluctuations typical of mountain environments.

If you’re considering this plant for your garden, you’ll want to:

  • Research local native plant societies for specific growing advice
  • Contact conservation organizations in Colorado or Utah for guidance
  • Ensure your garden conditions match its native mountain habitat

Is Western Sweetvetch Right for Your Garden?

This plant is best suited for gardeners who are passionate about native plant conservation and have experience with rare species. It’s not a beginner plant, nor is it suitable for casual gardeners looking for easy-care options.

Consider western sweetvetch if you:

  • Live in or near its native range (Colorado or Utah)
  • Have experience with native mountain plants
  • Are committed to conservation gardening practices
  • Want to support local biodiversity

Alternative Native Options

If western sweetvetch seems too challenging or rare for your garden, consider other native legumes from your region. Many areas have more common native sweetvetches or other leguminous wildflowers that can provide similar ecological benefits without the conservation concerns.

The Bottom Line

Western sweetvetch var. canone is a fascinating native plant that deserves respect and careful consideration. While it can be a rewarding addition to the right garden, its rarity means it’s not a plant to approach lightly. If you’re drawn to this mountain native, make sure you’re prepared to be a responsible steward of a truly special plant.

Western Sweetvetch

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Rosidae

Order

Fabales

Family

Fabaceae Lindl. - Pea family

Genus

Hedysarum L. - sweetvetch

Species

Hedysarum occidentale Greene - western sweetvetch

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