North America Native Plant

Boreal Locoweed

Botanical name: Oxytropis borealis var. australis

USDA symbol: OXBOA

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Boreal Locoweed: A Rare Western Native Worth Knowing About If you’re passionate about native plants and drawn to the more unusual specimens, you’ve probably never heard of boreal locoweed (Oxytropis borealis var. australis). Don’t worry – you’re not alone! This perennial forb is one of those under-the-radar natives that deserves ...

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. ⚘

Boreal Locoweed: A Rare Western Native Worth Knowing About

If you’re passionate about native plants and drawn to the more unusual specimens, you’ve probably never heard of boreal locoweed (Oxytropis borealis var. australis). Don’t worry – you’re not alone! This perennial forb is one of those under-the-radar natives that deserves more attention, though growing it successfully might be more challenging than your typical garden center find.

What Makes Boreal Locoweed Special?

Boreal locoweed is a true western native, naturally occurring in California, Nevada, and Utah. As a perennial forb, it’s essentially a non-woody flowering plant that comes back year after year. Think of it as the botanical equivalent of that reliable friend who shows up consistently but doesn’t make a big fuss about it.

This plant grows exclusively in the lower 48 states, making it a genuine piece of American botanical heritage. Its limited distribution across just three western states makes every encounter with this species feel like discovering a hidden treasure.

The Reality Check: Rarity and Responsibility

Here’s where things get interesting – and a bit complicated. Boreal locoweed has a conservation status that suggests it’s not exactly common in the wild. This rarity means that if you’re determined to grow this plant, you’ll need to be extra thoughtful about where you source it.

Important: Only obtain boreal locoweed from reputable native plant nurseries that can guarantee their plants are responsibly propagated, not collected from wild populations. Wild collection of rare plants can harm already vulnerable populations.

Growing Challenges and Considerations

Let’s be honest – boreal locoweed isn’t going to be the easiest addition to your garden. Limited information exists about its specific cultivation requirements, which suggests it may have specialized habitat needs that are difficult to replicate in typical garden settings.

What we do know:

  • It’s a perennial, so once established, it should return each year
  • As a western native adapted to California, Nevada, and Utah conditions, it likely prefers well-draining soils
  • It probably thrives in conditions similar to its natural habitat – potentially rocky, alkaline soils with good drainage

Garden Role and Landscape Design

Given its rarity and specialized nature, boreal locoweed would be best suited for:

  • Native plant collections and botanical gardens
  • Rock gardens designed to mimic western mountain conditions
  • Conservation-focused landscapes
  • Educational gardens showcasing regional flora

This isn’t a plant for mass plantings or casual gardening – it’s more of a specimen plant for the dedicated native plant enthusiast.

Should You Grow Boreal Locoweed?

The short answer: probably not, unless you’re a serious native plant collector with experience growing challenging species. The combination of limited availability, unclear growing requirements, and conservation concerns makes this plant better left to botanical professionals and very dedicated hobbyists.

If you’re drawn to western natives, consider these more readily available alternatives that share similar habitat preferences:

  • Other Oxytropis species that are more common
  • Native lupines
  • Regional wildflowers suited to your specific location

The Bottom Line

Boreal locoweed represents the fascinating diversity of our native flora, but it’s not a plant for every garden. Its rarity makes it more of a botanical curiosity than a practical landscape choice. If you encounter it in the wild during your western adventures, take a moment to appreciate this uncommon native – just leave it where you found it so others can enjoy the same discovery.

For most gardeners passionate about native plants, focusing on locally abundant species will give you better success rates and greater ecological impact. Sometimes the best way to appreciate a rare plant is simply knowing it exists and supporting the conservation efforts that protect its natural habitat.

Boreal Locoweed

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

Oxytropis DC. - locoweed

Species

Oxytropis borealis DC. - boreal locoweed

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