North America Native Plant

Monti’s Milkvetch

Botanical name: Astragalus limnocharis var. montii

USDA symbol: ASLIM

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Astragalus limnocharis Barneby var. tabulaeus S.L. Welsh (ASLIT)  âš˜  Astragalus montii S.L. Welsh (ASMO11)   

Monti’s Milkvetch: A Rare Utah Native That’s Best Left in the Wild If you’ve stumbled across Monti’s milkvetch (Astragalus limnocharis var. montii) in your research for native plants, you might be wondering if this unique legume would make a good addition to your garden. Well, here’s the thing – this ...

Rare plant alert!

Region: United States

Status: S2T1: Status is uncertain but is somewhere between the following rankings: Subspecies or variety is 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) ⚘ 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) ⚘ Uncertain taxonomy: ⚘ Subspecies or variety is 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) ⚘ 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) ⚘ Threatened: Experiencing significant population decline or habitat loss that could lead to its endangerment if not addressed. ⚘

Region: United States

Region: United States

Monti’s Milkvetch: A Rare Utah Native That’s Best Left in the Wild

If you’ve stumbled across Monti’s milkvetch (Astragalus limnocharis var. montii) in your research for native plants, you might be wondering if this unique legume would make a good addition to your garden. Well, here’s the thing – this particular plant is one of those special cases where the answer is a gentle but firm probably not, and I’ll explain why.

What Makes Monti’s Milkvetch Special

Monti’s milkvetch is a perennial member of the legume family, related to more common garden favorites like lupines and clovers. This Utah endemic has quite the botanical identity crisis, having gone by several scientific names over the years, including Astragalus limnocharis var. tabulaeus and Astragalus montii. But regardless of what scientists decide to call it, one thing remains constant – it’s incredibly rare.

Where Does It Call Home

This native plant species is found exclusively in Utah, making it what botanists call an endemic – a plant that exists nowhere else on Earth naturally. Its entire world consists of a small area within the state, which makes it both precious and vulnerable.

The Conservation Reality Check

Here’s where things get serious. Monti’s milkvetch carries a Threatened conservation status, which means it’s in real danger of disappearing from our planet. With conservation rankings of S2T1 and S2T1Q (don’t worry about the technical details – just know these indicate very rare), this isn’t a plant you’ll find at your local nursery, and that’s actually a good thing.

Why You Shouldn’t Plant It (Even If You Could Find It)

I know it might seem counterintuitive – if a plant is rare, shouldn’t we grow more of it? While that logic works for some species, plants with threatened status require a different approach:

  • Any seeds or plants available would need to come from wild populations, which could harm the remaining natural stands
  • Without knowing its specific growing requirements, home cultivation attempts often fail
  • Legal protections may restrict collection and cultivation
  • Professional conservation efforts are better equipped to help this species

What You Can Do Instead

If you’re drawn to the idea of supporting Utah’s native legumes, consider these alternatives that won’t put rare species at risk:

  • Look for other Astragalus species that aren’t threatened (always verify their conservation status first)
  • Choose common native Utah legumes like lupines or locoweed species with stable populations
  • Support conservation organizations working to protect rare plants in Utah
  • Learn to identify rare plants so you can report sightings to botanists

The Bigger Picture

Monti’s milkvetch represents something larger than just one small plant – it’s a reminder that our native plant communities include species hanging by a thread. While we can’t all have this particular milkvetch in our gardens, we can appreciate its existence and support the conservation work that keeps such rarities from disappearing forever.

Sometimes the best way to love a plant is to leave it where it belongs – in its natural habitat, hopefully thriving under the care of dedicated conservationists and the wild Utah landscape that shaped it over thousands of years.

Supporting Conservation from Your Garden

Though you can’t grow Monti’s milkvetch, you can still make a difference by creating habitat for other native Utah species in your own space. Every native plant garden becomes a small refuge, and collectively, these efforts support the broader ecosystem that rare plants like Monti’s milkvetch depend on.

Monti’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 limnocharis Barneby - Cedar Breaks milkvetch

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