North America Native Plant

Minthorn’s Milkvetch

Botanical name: Astragalus minthorniae var. minthorniae

USDA symbol: ASMIM2

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Minthorn’s Milkvetch: A Hidden Gem of Nevada’s Native Flora If you’re looking to add authentic Western charm to your native plant garden, you might want to get acquainted with Minthorn’s milkvetch (Astragalus minthorniae var. minthorniae). This perennial beauty represents the rugged spirit of Nevada’s landscapes and could be just the ...

Rare plant alert!

Region: Conservation status by state

Status: S4T3T4: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is vulnerable: Either very rare and local throughout its range, found only in a restricted range (even if abundant at some locations), or factors are making it vulnerable to extinction. Typically 21 to 100 occurrences or between 3,000 and 10,000 individuals. ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘ 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 ⚘

Minthorn’s Milkvetch: A Hidden Gem of Nevada’s Native Flora

If you’re looking to add authentic Western charm to your native plant garden, you might want to get acquainted with Minthorn’s milkvetch (Astragalus minthorniae var. minthorniae). This perennial beauty represents the rugged spirit of Nevada’s landscapes and could be just the conversation starter your garden needs.

What Makes Minthorn’s Milkvetch Special?

Minthorn’s milkvetch is a true Nevada native, belonging to the diverse Astragalus genus – a group of plants commonly known as milkvetches or locoweeds. As a perennial, this plant returns year after year, making it a reliable addition to any long-term landscaping plan. What sets this particular variety apart is its exclusive relationship with the Silver State – you won’t find it growing wild anywhere else in the world!

Where Does It Call Home?

This plant is endemic to Nevada, meaning it has evolved specifically to thrive in the unique conditions found within the state’s borders. Its limited range makes it a true botanical treasure for those interested in preserving regional biodiversity.

Should You Grow Minthorn’s Milkvetch?

Here’s where things get interesting. While Minthorn’s milkvetch is undoubtedly a fascinating native species, there are a few considerations to keep in mind:

  • Rarity Factor: This plant has a conservation status that suggests it may have limited populations in the wild
  • Specialized Needs: As a Nevada endemic, it likely has very specific growing requirements
  • Limited Availability: You probably won’t find this at your local garden center

The Responsible Approach

If you’re passionate about growing this unique Nevada native, the key word is responsibility. Never collect plants or seeds from wild populations – this can harm already vulnerable species. Instead, seek out reputable native plant nurseries or conservation organizations that may offer responsibly propagated specimens.

What We’re Still Learning

Like many specialized native plants, there’s still much to discover about Minthorn’s milkvetch. Research into its specific growing conditions, wildlife relationships, and garden performance is ongoing. This makes it an exciting choice for the adventurous gardener who doesn’t mind being part of the learning process!

Alternative Native Options

While you’re searching for responsibly sourced Minthorn’s milkvetch, consider exploring other Nevada natives that might be more readily available:

  • Desert lupine for similar legume family benefits
  • Nevada buckwheat for drought tolerance
  • Desert marigold for long-blooming color

The Bottom Line

Minthorn’s milkvetch represents the kind of unique, place-based gardening that truly celebrates local ecosystems. While it may not be the easiest plant to source or grow, it offers the dedicated native plant enthusiast a chance to cultivate something truly special – a piece of Nevada’s natural heritage right in their own backyard.

Just remember: with great botanical rarity comes great responsibility. If you do manage to grow this fascinating milkvetch, you’ll be joining a select group of gardeners helping to preserve Nevada’s unique plant legacy for future generations.

Minthorn’s Milkvetch

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

Astragalus L. - milkvetch

Species

Astragalus minthorniae (Rydb.) Jeps. - Minthorn's milkvetch

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