Non-native Plants

Keyflower

Dactylorhiza majalis praetermissa

USDA symbol: DAMAP

perennial forb

Canada: non-native, naturalized

If you’ve stumbled across the name keyflower in your plant research, you’ve discovered one of those botanical mysteries that keeps plant enthusiasts scratching their heads. Known scientifically as Dactylorhiza majalis praetermissa, this perennial orchid is more enigma than garden staple. Keyflower belongs to the orchid family and falls into that ...

Keyflower: A Mysterious Orchid with Limited Garden Potential

If you’ve stumbled across the name keyflower in your plant research, you’ve discovered one of those botanical mysteries that keeps plant enthusiasts scratching their heads. Known scientifically as Dactylorhiza majalis praetermissa, this perennial orchid is more enigma than garden staple.

What Exactly Is Keyflower?

Keyflower belongs to the orchid family and falls into that broad category of plants we call forbs – essentially herbaceous flowering plants that aren’t grasses, sedges, or rushes. Think of it as nature’s way of keeping things interesting without getting too woody about it.

This perennial plant is part of the larger Dactylorhiza genus, which includes various marsh and spotted orchids. However, information specifically about Dactylorhiza majalis praetermissa is surprisingly scarce, making it something of a botanical wallflower at the garden party.

Where Does It Call Home?

Here’s where things get interesting from a North American gardening perspective: keyflower isn’t actually native to our continent. This introduced species has made itself at home in parts of Canada, specifically Ontario and Newfoundland, where it reproduces on its own in the wild.

  • Species observed
  • No observations

The fact that it’s established itself in these cooler, northern regions gives us some clues about its preferences, though specific growing requirements remain largely undocumented.

Should You Grow Keyflower?

This is where we hit our first major roadblock. While keyflower isn’t listed as invasive or noxious, the lack of comprehensive information about its behavior, growing requirements, and garden performance makes it a risky bet for most gardeners.

Here’s what we’re working with:

  • Limited availability in the nursery trade
  • Unknown growing requirements and care needs
  • Unclear garden performance and aesthetic value
  • No documented wildlife or pollinator benefits

Native Alternatives Worth Considering

Instead of gambling on this botanical mystery, why not explore some well-documented native orchid alternatives? North American native orchids like Pink Lady’s Slipper (Cypripedium acaule) or various native Platanthera species offer:

  • Proven garden performance
  • Known wildlife benefits
  • Established care guidelines
  • Support for local ecosystems

The Bottom Line

While keyflower might sound intriguing, it falls into that category of plants that are more interesting to botanists than practical for gardeners. The combination of limited information, uncertain availability, and unknown garden behavior makes it a challenging choice for most landscapes.

If you’re drawn to orchids, you’ll likely find more success and satisfaction with well-documented native species that offer clear growing guidelines and proven benefits to local wildlife. Sometimes the most mysterious plants are mysteries for a reason – they’re simply not ready for prime time in our gardens.

For orchid enthusiasts willing to experiment, proceed with caution and consider supporting native plant communities instead. Your local pollinators will thank you, and you’ll have a much better chance of gardening success.

Classification

Group: Monocot
Kingdom: Plantae - Plants
Subkingdom: Tracheobionta - Vascular plants
Superdivision: Spermatophyta - Seed plants
Division: Magnoliophyta - Flowering plants
Class: Liliopsida - Monocotyledons
Subclass: Liliidae
Order: Orchidales
Family: Orchidaceae Juss. - Orchid family
Genus: Dactylorhiza Neck. ex Nevski - keyflower

Species: Dactylorhiza majalis (Rchb. f.) P.F. Hunt & Summerhayes - keyflower

Subspecies: Dactylorhiza majalis (Rchb. f.) P.F. Hunt & Summerhayes ssp. praetermissa (Druce) D.M. Moore & Soó - keyflower

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