North America Native Plant

Panamint Mountain Mariposa Lily

Botanical name: Calochortus panamintensis

USDA symbol: CAPA45

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Calochortus nuttallii Torr. & A. Gray var. panamintensis Ownbey (CANUP)   

Growing the Panamint Mountain Mariposa Lily: A Desert Treasure for Your Garden If you’re looking for a truly special native bulb that brings a touch of desert magic to your garden, meet the Panamint Mountain mariposa lily (Calochortus panamintensis). This stunning perennial is one of nature’s hidden gems, producing delicate ...

Rare plant alert!

Region: Conservation status by state

Status: S3: Status is uncertain but is somewhere between the following rankings: 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 ⚘

Growing the Panamint Mountain Mariposa Lily: A Desert Treasure for Your Garden

If you’re looking for a truly special native bulb that brings a touch of desert magic to your garden, meet the Panamint Mountain mariposa lily (Calochortus panamintensis). This stunning perennial is one of nature’s hidden gems, producing delicate cup-shaped flowers that seem almost too beautiful for the harsh desert mountains where they naturally grow.

What Makes This Plant Special

The Panamint Mountain mariposa lily is a herbaceous perennial that belongs to the lily family, though it grows from a bulb rather than traditional roots. What sets this plant apart is its absolutely gorgeous flowers – typically white to pale pink cups adorned with intricate markings that look like they were painted by an artist’s brush. These blooms appear in late spring to early summer, creating a brief but memorable display.

As a forb (a non-woody flowering plant), this mariposa lily dies back to its underground bulb during harsh conditions, making it perfectly adapted to survive in challenging desert environments.

Where It Comes From

This native beauty calls the desert mountains of California and Nevada home, with a particular affinity for the Panamint Range that gives it its name. It’s perfectly adapted to the extreme conditions of these high desert environments, where water is scarce and temperatures can swing dramatically.

A Word of Caution: This is a Rare Plant

Before you get too excited about adding this lovely lily to your collection, there’s something important you need to know. The Panamint Mountain mariposa lily has a Global Conservation Status of S3, meaning it’s considered vulnerable. With only an estimated 21 to 100 populations existing in the wild (or between 3,000 and 10,000 individual plants), this species is at risk.

If you choose to grow this plant, please only purchase from reputable nurseries that sell responsibly sourced, nursery-propagated bulbs – never collect from the wild.

Is This Plant Right for Your Garden?

The Panamint Mountain mariposa lily isn’t for everyone, but it could be perfect if you:

  • Love unique, rare native plants
  • Have a rock garden or xerophytic landscape
  • Want to support native pollinators with specialized native flowers
  • Enjoy the challenge of growing unusual desert bulbs
  • Live in USDA hardiness zones 7-10

This plant works beautifully in desert gardens, rock gardens, and native plant collections where its subtle beauty can be appreciated up close.

Growing Conditions and Care

Like most desert natives, the Panamint Mountain mariposa lily has some specific needs:

  • Sunlight: Full sun is essential
  • Soil: Extremely well-draining soil is crucial – think sandy or rocky conditions
  • Water: Minimal water, especially during summer dormancy
  • Climate: Thrives in areas with dry summers and cool, moist winters

Planting and Care Tips

Success with this desert beauty requires mimicking its natural habitat:

  • Plant bulbs in fall, about 3-4 inches deep
  • Ensure excellent drainage – consider raised beds or containers if your soil retains water
  • Water sparingly during the growing season (fall through spring)
  • Allow the plant to go completely dry during summer dormancy
  • Mulch with gravel or decomposed granite rather than organic mulch
  • Be patient – bulbs may take a year or two to establish and bloom reliably

Pollinator and Wildlife Benefits

While small in stature, the Panamint Mountain mariposa lily plays an important role in supporting native pollinators, particularly specialized bees that have co-evolved with native bulbs. By growing this plant, you’re helping maintain these important ecological relationships.

The Bottom Line

The Panamint Mountain mariposa lily is a plant for gardeners who appreciate rarity and are committed to conservation. It’s not the easiest plant to grow, but for those willing to provide the right conditions and source their bulbs responsibly, it offers a unique connection to the wild desert landscapes of the American West. Just remember – with great beauty comes great responsibility to protect these vulnerable populations for future generations.

Panamint Mountain Mariposa Lily

Classification

Group

Monocot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Liliopsida - Monocotyledons

Subclass

Liliidae

Order

Liliales

Family

Liliaceae Juss. - Lily family

Genus

Calochortus Pursh - mariposa lily

Species

Calochortus panamintensis (Ownbey) Reveal - Panamint Mountain mariposa lily

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