North America Native Plant

Longbeard Mariposa Lily

Botanical name: Calochortus longebarbatus

USDA symbol: CALO3

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Longbeard Mariposa Lily: A Hidden Gem for Pacific Northwest Gardens If you’re looking for a truly special native flower to add some unexpected charm to your garden, meet the longbeard mariposa lily (Calochortus longebarbatus). This delightful perennial might not be the most famous member of the mariposa lily family, but ...

Longbeard Mariposa Lily: A Hidden Gem for Pacific Northwest Gardens

If you’re looking for a truly special native flower to add some unexpected charm to your garden, meet the longbeard mariposa lily (Calochortus longebarbatus). This delightful perennial might not be the most famous member of the mariposa lily family, but it certainly deserves a spot in any native plant enthusiast’s heart—and garden!

What Makes This Native Beauty Special

The longbeard mariposa lily is a true Pacific Northwest native, calling California, Oregon, and Washington home. As a perennial forb, this herbaceous plant returns year after year, emerging from underground bulbs to grace your garden with its presence. Unlike woody shrubs or trees, this charming wildflower stays relatively low to the ground and dies back seasonally, making it perfect for layering with other native plants.

What really sets this mariposa lily apart is right there in its name—those distinctive long, beard-like hairs that decorate its petals. The cup-shaped flowers, typically white to pale pink, feature these enchanting barbate (hairy) petals that give the plant its memorable common name. When in bloom during late spring to early summer, these flowers create a truly magical display that will have visitors doing double-takes in your garden.

Why Your Garden (and Local Wildlife) Will Love It

Native plants like the longbeard mariposa lily are garden superstars for several reasons. First, they’re naturally adapted to local growing conditions, which means less fussing and more enjoying. This particular species has a facultative wetland status in both the Arid West and Western Mountains regions, meaning it’s quite adaptable—it can handle both moist and drier conditions, though it prefers the latter during its summer dormancy.

Pollinators absolutely adore mariposa lilies! Bees and butterflies are drawn to these native blooms, making your garden a valuable pit stop in their daily travels. By choosing native plants like this one, you’re creating habitat and supporting the local ecosystem right in your backyard.

Perfect Garden Companions and Placement

The longbeard mariposa lily shines in several garden settings:

  • Rock gardens where its delicate beauty can be showcased
  • Native plant gardens alongside other Pacific Northwest wildflowers
  • Naturalized areas where it can spread and create drifts
  • Xerophytic landscapes that celebrate drought-tolerant plants

This species works wonderfully as a specimen plant where its unique flowers can steal the show, or incorporated into mixed plantings where it adds texture and seasonal interest.

Growing Your Longbeard Mariposa Lily

Successfully growing this native beauty is all about understanding its natural preferences. In the wild, longbeard mariposa lilies thrive in mountainous regions with well-draining soils and plenty of sunshine, though they can tolerate some partial shade.

Key growing requirements:

  • Well-draining soil is absolutely essential—soggy conditions are a no-go
  • Full sun to partial shade exposure
  • USDA hardiness zones 6-9
  • Dry summer dormancy period (very important!)

Planting and Care Tips

The secret to success with longbeard mariposa lily lies in mimicking its natural growing cycle. Plant bulbs in fall, allowing them to experience the cool, moist winter conditions they need for proper development. Come spring, you’ll be rewarded with emerging foliage and those spectacular blooms.

Perhaps the most crucial care tip: respect the summer dormancy! After blooming and as temperatures rise, this plant naturally goes dormant. Resist the urge to water during this period—in fact, keeping the bulbs dry during summer dormancy is essential for their long-term health and survival.

Once established, these tough native plants are remarkably low-maintenance. They’ve evolved to thrive in Pacific Northwest conditions, so your main job is simply to provide the right growing environment and then step back and enjoy the show.

A Native Choice Worth Making

While the longbeard mariposa lily might require a bit more patience and understanding than some garden center staples, the reward is absolutely worth it. You’ll have a conversation-starting native plant that supports local wildlife, connects your garden to the regional landscape, and provides a unique beauty that can’t be found in typical garden varieties.

For gardeners passionate about native plants and sustainable landscaping, the longbeard mariposa lily represents the perfect combination of ecological value and ornamental appeal. It’s these special native gems that make Pacific Northwest gardens truly distinctive and deeply connected to place.

Wetland Status

The rule of seasoned gardeners and landscapers is to choose the "right plant for the right place" matching plants to their ideal growing conditions, so they'll thrive with less work and fewer inputs. But the simplicity of this catchphrase conceals how tricky plant selection is. While tags list watering requirements, there's more to the story.

Knowing a plant's wetland status can simplify the process by revealing the interaction between plants, water, and soil. Surprisingly, many popular landscape plants are wetland species! And what may be a wetland plant in one area, in another it might thrive in drier conditions. Also, it helps you make smarter gardening choices and grow healthy plants with less care and feeding, saving you time, frustration, and money while producing an attractive garden with greater ecological benefits.

Regions
Status
Moisture Conditions

Arid West

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Western Mountains, Valleys, and Coast

FAC

Facultative - Plants with this status can occur in wetlands and non-wetlands

Longbeard 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 longebarbatus S. Watson - longbeard 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