North America Native Plant

Gunnison’s Mariposa Lily

Botanical name: Calochortus gunnisonii var. gunnisonii

USDA symbol: CAGUG

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Gunnison’s Mariposa Lily: A Native Gem for Western Gardens If you’re looking for a stunning native wildflower that practically takes care of itself, let me introduce you to Gunnison’s mariposa lily (Calochortus gunnisonii var. gunnisonii). This perennial beauty is one of those plants that makes you wonder why more gardeners ...

Gunnison’s Mariposa Lily: A Native Gem for Western Gardens

If you’re looking for a stunning native wildflower that practically takes care of itself, let me introduce you to Gunnison’s mariposa lily (Calochortus gunnisonii var. gunnisonii). This perennial beauty is one of those plants that makes you wonder why more gardeners don’t know about it – it’s gorgeous, drought-tolerant, and perfectly at home in western landscapes.

What Makes This Native Special

Gunnison’s mariposa lily is a true native of the American West, naturally growing across eight states including Colorado, Utah, Wyoming, Arizona, Montana, Nebraska, New Mexico, and South Dakota. As a native species, it’s perfectly adapted to the challenging conditions of western climates and provides authentic regional character to your garden.

This herbaceous perennial belongs to the forb family, meaning it’s a non-woody flowering plant that dies back to the ground each winter and returns fresh each spring. Don’t let the technical classification fool you though – this plant is all about putting on a spectacular floral show.

The Beauty Factor

The real magic happens in late spring and early summer when Gunnison’s mariposa lily produces its signature cup-shaped flowers. These blooms are typically white to pale lavender with distinctive purple markings that create an almost painted appearance. Each flower sits atop a slender stem, creating an elegant, understated presence in the garden that’s both refined and wild.

Perfect for Low-Water Gardens

Here’s where this native really shines – it’s incredibly drought-tolerant once established. If you’re tired of babying thirsty plants or live in an area with water restrictions, Gunnison’s mariposa lily could be your new best friend. This makes it ideal for:

  • Xeriscape gardens
  • Native plant landscapes
  • Rock gardens
  • Naturalized wildflower areas
  • Low-maintenance perennial borders

Wildlife and Pollinator Benefits

Native plants like Gunnison’s mariposa lily have co-evolved with local wildlife, making them excellent choices for supporting biodiversity. The flowers attract native bees and butterflies, adding movement and life to your garden while supporting important pollinators.

Growing Gunnison’s Mariposa Lily Successfully

The good news? This native is relatively easy to grow if you can provide what it needs. Gunnison’s mariposa lily thrives in USDA hardiness zones 4-8, making it suitable for much of the western United States.

Planting and Care Tips

Like many western natives, the key to success is mimicking the plant’s natural growing conditions:

  • Soil: Well-draining soil is absolutely essential – this plant cannot tolerate wet feet
  • Light: Full sun to partial shade, though it performs best with plenty of sunlight
  • Water: Minimal water needs once established; overwatering is more harmful than underwatering
  • Planting time: Plant bulbs in fall for spring emergence
  • Dormancy: The plant goes dormant in summer, so don’t panic when it disappears – it’s just resting

Is This Plant Right for Your Garden?

Gunnison’s mariposa lily is perfect for gardeners who want to create authentic western landscapes with minimal maintenance. It’s especially appealing if you:

  • Live within its native range and want to support local ecosystems
  • Prefer low-water gardening
  • Love unique, ephemeral blooms
  • Want to support native pollinators
  • Appreciate plants with seasonal rhythms

Keep in mind that this isn’t a plant for gardeners who want constant color or formal garden settings. Its natural growth habit and seasonal dormancy make it better suited for naturalized areas and native plant gardens.

The Bottom Line

Gunnison’s mariposa lily offers western gardeners a chance to grow a truly special native plant that’s both beautiful and environmentally beneficial. With its stunning flowers, drought tolerance, and wildlife value, it’s a wonderful addition to gardens that celebrate the natural heritage of the American West. Just remember to source your plants or bulbs responsibly from reputable native plant suppliers to ensure you’re getting true native genetics.

Gunnison’s 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 gunnisonii S. Watson - Gunnison's 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