North America Native Plant

Sheathed Deathcamas

Botanical name: Zigadenus vaginatus

USDA symbol: ZIVA

Life cycle: perennial

Habit: forb

Native status: Native to the lower 48 states  

Synonyms: Anticlea vaginata Rydb. (ANVA4)   

Sheathed Deathcamas: A Rare Western Wildflower Worth Protecting Meet the sheathed deathcamas (Zigadenus vaginatus), one of the American West’s most elusive native wildflowers. This perennial forb might not be a household name, but it plays an important role in the delicate ecosystems of Colorado and Utah. If you’re lucky enough ...

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) ⚘

Sheathed Deathcamas: A Rare Western Wildflower Worth Protecting

Meet the sheathed deathcamas (Zigadenus vaginatus), one of the American West’s most elusive native wildflowers. This perennial forb might not be a household name, but it plays an important role in the delicate ecosystems of Colorado and Utah. If you’re lucky enough to encounter this rare beauty in the wild, consider yourself privileged – you’re looking at a plant that’s becoming increasingly uncommon in our modern landscape.

What Makes Sheathed Deathcamas Special

Sheathed deathcamas belongs to a group of plants that have earned their dramatic common name honestly – many species in the Zigadenus genus contain toxic alkaloids. But don’t let that scare you away from appreciating this plant’s ecological importance. As a native perennial forb, it’s perfectly adapted to life in the challenging environments of the American West.

You might also see this plant listed under its scientific synonym, Anticlea vaginata, as botanical classifications continue to evolve with our understanding of plant relationships.

Where You’ll Find It (If You’re Lucky)

This rare native calls only two states home: Colorado and Utah. Its limited range makes every population precious, contributing to its imperiled conservation status.

Conservation Concerns: Why This Plant Needs Our Help

Here’s where things get serious. Sheathed deathcamas has a Global Conservation Status of S2, meaning it’s imperiled due to extreme rarity. With typically only 6 to 20 occurrences and possibly just 1,000 to 3,000 individuals remaining in the wild, this plant is walking a tightrope toward extinction.

This rarity status means that if you’re considering adding sheathed deathcamas to your garden, you need to be extra cautious about sourcing. Never collect plants or seeds from wild populations – this could push already vulnerable communities over the edge.

Garden Potential and Growing Considerations

While specific growing information for sheathed deathcamas is limited due to its rarity, we do know it’s classified as facultative for wetland status. This means it’s adaptable enough to grow in both wetland and non-wetland conditions, giving it some flexibility in garden settings.

As a perennial forb, it lacks significant woody tissue and maintains its life cycle through underground parts that survive from year to year. This growth habit typically makes for relatively low-maintenance plants once established.

Should You Grow Sheathed Deathcamas?

The short answer is: only if you can source it responsibly. Given its imperiled status, this isn’t a plant for casual gardeners to experiment with. However, if you’re a dedicated conservationist with access to ethically propagated material, growing sheathed deathcamas could contribute to conservation efforts.

Consider these points:

  • Only obtain plants or seeds from reputable native plant societies or conservation organizations
  • Never collect from wild populations
  • Focus on creating habitat that could support reintroduction efforts
  • Consider growing more common native alternatives that provide similar ecological benefits

Alternative Native Options

If you’re drawn to the idea of supporting native Western wildflowers but can’t source sheathed deathcamas responsibly, consider these more common native alternatives that thrive in Colorado and Utah:

  • Wild bergamot (Monarda fistulosa)
  • Rocky Mountain beeplant (Cleome serrulata)
  • Purple prairie clover (Dalea purpurea)
  • Blanketflower (Gaillardia aristata)

The Bigger Picture

Whether or not you ever grow sheathed deathcamas in your garden, learning about rare plants like this one helps us understand the incredible diversity that once flourished across our landscapes. Every imperiled species represents a unique solution to environmental challenges, developed over thousands of years of evolution.

By choosing to plant native species in our gardens – even the more common ones – we create stepping stones of habitat that can support the entire web of life, including rare species like sheathed deathcamas. Sometimes the best way to help a rare plant is to create the kind of diverse, native landscape where it might one day find a home again.

Remember, gardening with native plants isn’t just about what we plant – it’s about becoming stewards of the incredible natural heritage that surrounds us.

Sheathed Deathcamas

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

Zigadenus Michx. - deathcamas

Species

Zigadenus vaginatus (Rydb.) J.F. Macbr. - sheathed deathcamas

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