North America Native Plant

St. Marys Peak Bladderpod

Botanical name: Lesquerella humilis

USDA symbol: LEHU

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

St. Mary’s Peak Bladderpod: A Rare Montana Treasure You Shouldn’t Plant Have you ever heard of a plant so rare that even mentioning it feels like sharing a secret? Meet the St. Mary’s Peak bladderpod (Lesquerella humilis), a tiny perennial wildflower that’s become one of Montana’s most precious botanical treasures. ...

Rare plant alert!

Region: Conservation status by state

Status: S2: Status is uncertain but is somewhere between the following rankings: 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) ⚘

St. Mary’s Peak Bladderpod: A Rare Montana Treasure You Shouldn’t Plant

Have you ever heard of a plant so rare that even mentioning it feels like sharing a secret? Meet the St. Mary’s Peak bladderpod (Lesquerella humilis), a tiny perennial wildflower that’s become one of Montana’s most precious botanical treasures. But before you start dreaming of adding this unique native to your garden, there’s something important you need to know.

What Makes This Plant So Special?

The St. Mary’s Peak bladderpod is what botanists call an endemic species – it exists naturally in only one small area on Earth. This little forb (that’s just a fancy word for a soft-stemmed flowering plant) belongs to the mustard family and produces small, cheerful yellow flowers that would look right at home in any wildflower meadow.

As a perennial, this plant comes back year after year, though it lacks any woody stems above ground. Instead, it overwinters with buds tucked safely at or below the soil surface, waiting for Montana’s brief growing season to emerge and bloom.

Where Does It Call Home?

Here’s where things get really interesting – and concerning. The St. Mary’s Peak bladderpod is found only in Montana, specifically in the area around St. Mary’s Peak. We’re talking about an incredibly tiny geographic range for any plant species.

The Rarity Reality Check

Now for the important part: this plant has a Global Conservation Status of S2, which means it’s considered Imperiled. In plain English, that means there are typically only 6 to 20 known populations left, with somewhere between 1,000 to 3,000 individual plants remaining in the wild. That’s it. In the entire world.

This is why you should NOT plant St. Mary’s Peak bladderpod in your garden, even if you could find it.

Why Gardeners Should Admire from Afar

I know it’s tempting to want to grow something so rare and special, but here’s the thing – attempting to cultivate this plant could actually harm the species more than help it. Here’s why:

  • Wild collection would directly reduce already tiny populations
  • The plant has very specific alpine growing requirements that are nearly impossible to replicate in typical gardens
  • It’s adapted to Montana’s harsh mountain conditions, including specific soil types, elevation, and climate patterns
  • Even if grown successfully, garden plants can’t contribute to wild population recovery

What You Can Do Instead

If you’re drawn to rare native plants and want to support conservation, consider these alternatives:

  • Plant other native Montana wildflowers that aren’t at risk
  • Support organizations working to protect rare plant habitats
  • Choose native mustard family plants that can thrive in gardens, like wild mustard or field pennycress
  • Create habitat for pollinators that might also benefit rare plants in the wild

The Bigger Picture

Plants like the St. Mary’s Peak bladderpod remind us that not every native species is meant for our gardens. Sometimes, the best way to appreciate and support a plant is to leave it exactly where it belongs – in its natural habitat, fighting for survival in the wild places that make our world so wonderfully diverse.

Instead of trying to grow this rare beauty, why not plan a trip to Montana to see it in its natural setting? Just remember to look but don’t touch – and definitely don’t dig. Some treasures are best appreciated from a respectful distance.

Conservation Matters

The story of St. Mary’s Peak bladderpod is ultimately a reminder about the fragility of our natural world. With climate change, habitat loss, and other pressures, many plants are struggling to survive. As gardeners and nature lovers, we can play a crucial role in conservation by making thoughtful choices about what we plant and how we interact with wild spaces.

So while you won’t be adding this particular native to your garden, you can still honor its existence by supporting conservation efforts and choosing abundant native plants that will thrive in your landscape while supporting local ecosystems.

St. Marys Peak Bladderpod

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

Lesquerella S. Watson - bladderpod

Species

Lesquerella humilis Rollins - St. Marys Peak bladderpod

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