North America Native Plant

Chimissso’s Orchid

Botanical name: Platanthera chorisiana

USDA symbol: PLCH3

Life cycle: perennial

Habit: forb

Native status: Native to Alaska âš˜ Native to Canada âš˜ Native to the lower 48 states  

Synonyms: Habenaria chorisiana Cham. (HACH3)   

Chamisso’s Orchid: A Rare Pacific Northwest Wetland Gem If you’ve ever wandered through the misty bogs and wetlands of the Pacific Northwest, you might have encountered one of nature’s most elusive treasures: Chamisso’s orchid (Platanthera chorisiana). This delicate native orchid is a true testament to the specialized beauty that thrives ...

Rare plant alert!

Region: Conservation status by state

Status: S3S4: 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 ⚘ Apparently Secure: Uncommon but not rare, and usually widespread. Possibly cause for longterm concern. Typically more than 100 occurrences in the state or more than 10,000 individuals ⚘

Chamisso’s Orchid: A Rare Pacific Northwest Wetland Gem

If you’ve ever wandered through the misty bogs and wetlands of the Pacific Northwest, you might have encountered one of nature’s most elusive treasures: Chamisso’s orchid (Platanthera chorisiana). This delicate native orchid is a true testament to the specialized beauty that thrives in our region’s unique wetland ecosystems.

What Makes Chamisso’s Orchid Special?

Chamisso’s orchid is a perennial forb that belongs to the fascinating world of native orchids. Unlike the showy tropical orchids you might see in flower shops, this modest beauty produces small, delicate white to greenish-white flowers arranged along a slender spike. The flowers feature the characteristic spur that gives the Platanthera genus its common name of bog orchids.

Growing typically 6 to 20 inches tall, this orchid may not command attention from across a meadow, but up close, its intricate floral structure reveals the remarkable complexity that makes orchids so captivating to botanists and nature lovers alike.

Where You’ll Find This Native Beauty

Chamisso’s orchid calls the cool, moist regions of the Pacific Northwest home. Its native range includes British Columbia, Alaska, and Washington, where it thrives in the region’s characteristic coastal wetlands and bogs.

This orchid has earned the designation of Obligate Wetland species in both Alaska and the Western Mountains, Valleys, and Coast regions, meaning it almost always occurs in wetlands. You’ll typically find it in sphagnum bogs, wet meadows, and other consistently moist, acidic environments.

A Word of Caution: Rarity and Conservation

Before we dive into growing considerations, it’s important to note that Chamisso’s orchid has a Global Conservation Status of S3S4, which indicates some level of conservation concern. This rarity status means we should approach this species with respect and responsibility.

Should You Grow Chamisso’s Orchid?

Here’s where we need to have an honest conversation. While Chamisso’s orchid is undeniably beautiful and ecologically valuable, it’s not a plant for the typical home garden—or even for most experienced gardeners. Here’s why:

  • Extreme specialization: This orchid requires very specific mycorrhizal relationships with soil fungi to survive
  • Wetland dependency: It needs consistently wet, acidic conditions that are difficult to replicate
  • Cool climate requirements: Adapted to the cool, humid conditions of coastal regions (USDA zones 3-7)
  • Conservation concerns: Its rarity status suggests we should protect existing populations rather than attempt cultivation

Appreciating Rather Than Growing

Instead of trying to bring Chamisso’s orchid into your garden, consider these alternatives:

  • Visit natural habitats: Seek out local bogs and wetlands where you might spot this orchid in its native environment
  • Support wetland conservation: Contribute to organizations that protect the bog and wetland habitats this orchid depends on
  • Choose garden-friendly natives: Plant other Pacific Northwest natives that are better suited to cultivation, such as wild ginger, inside-out flower, or native sedges for wet areas

Ecological Value and Wildlife Benefits

While you may not be growing Chamisso’s orchid in your backyard, it plays an important role in its native ecosystem. Like many orchids, it likely attracts specialized pollinators, particularly small moths and other nocturnal insects that are drawn to its subtle fragrance and pale flowers.

The plant’s presence in wetland ecosystems also indicates healthy bog conditions, making it something of an environmental indicator species.

Creating Orchid-Friendly Habitat

If you’re passionate about supporting native orchids, focus on creating and maintaining the broader wetland habitats they need:

  • Preserve or restore wetland areas on your property
  • Avoid using chemicals that might run off into nearby wetlands
  • Plant native species that support the complex web of relationships wetland orchids depend on
  • Participate in citizen science projects that monitor orchid populations

The Bottom Line

Chamisso’s orchid is a remarkable example of the specialized beauty found in Pacific Northwest wetlands. While it’s not suitable for home cultivation, understanding and appreciating this rare orchid can deepen our connection to the unique ecosystems of our region. Sometimes the best way to grow a plant is to ensure its wild habitat remains healthy and protected.

The next time you’re exploring a bog or wetland in the Pacific Northwest, keep your eyes peeled for the delicate spikes of Chamisso’s orchid. Spotting one in the wild is far more rewarding than any garden bloom—and you’ll be witnessing a true testament to the intricate beauty of our native plant communities.

Chimissso’s Orchid

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

Orchidales

Family

Orchidaceae Juss. - Orchid family

Genus

Platanthera Rich. - fringed orchid

Species

Platanthera chorisiana (Cham.) Rchb. - Chimissso's orchid

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