Clustered Lady's Slipper
Cypripedium fasciculatum
Last reviewed: August 2026
Toxicity unknown
Clustered Lady's Slipper (Cypripedium fasciculatum) is not listed by the ASPCA Animal Poison Control Center (opens in new tab) or the other sources we check, so we have no verdict for it either way. Absence from those lists is not a clearance. If your pet shows symptoms after eating any plant, call the ASPCA at (888) 426-4435.
Light
part shade
Water
medium
Size
6"–18" H × 4"–12" W
Bloom
May, Jun, Jul
Native to
CA, CO, ID, MT and 4 more states
Pollinators
bees
Before you buy
Your city may pay you to plant this
Cities and water utilities offer rebates for replacing lawn with native and water-wise plants. We track 437 programs across 44 states, each with a link to the provider and the date we last checked it.
Find rebates in your areaBrowse plants for this ecoregion
Clustered lady's slipper is a rare native orchid with distinctive pouch-shaped flowers that bloom in late spring and early summer. This delicate woodland plant prefers shaded conditions and can be challenging to establish, requiring specific soil conditions and mycorrhizal relationships to thrive.
In an HOA neighborhood
Clustered Lady's Slipper takes more care to keep looking intentional in a front yard. Maintenance level: high. Consider it for backyard or mid-zone beds rather than the street edge.
Works well in: backyard only.
- Extremely rare and protected species
- Can appear weedy or absent when dormant
- Difficult to maintain and may die back unpredictably
Wildlife value
The unique flowers attract native bees and other small pollinators. As a native orchid, it provides specialized habitat value for woodland ecosystems.
Common questions
- How much sun does Clustered Lady's Slipper need?
- Clustered Lady's Slipper grows best in part shade conditions.
- When does Clustered Lady's Slipper bloom?
- Clustered Lady's Slipper blooms in May, June, and July.
- Where is Clustered Lady's Slipper native?
- Clustered Lady's Slipper (Cypripedium fasciculatum) is native to CA, CO, ID, MT and 4 more states, per the World Checklist of Vascular Plants (Kew).
- What pollinators does Clustered Lady's Slipper attract?
- Clustered Lady's Slipper draws bees.
- Is Clustered Lady's Slipper HOA-friendly?
- Clustered Lady's Slipper takes more care to look intentional in a front yard. Consider it for backyard or mid-zone beds rather than the street edge.
Native range data from the World Checklist of Vascular Plants (Kew). Pollinator and host plant associations compiled from GBIF, iNaturalist, and published ecological literature.
Ready to grow Clustered Lady's Slipper? Add it to your garden in Pollinator Patch to track it and get season-by-season care guidance.
Not sure where to start? Take the 2-minute yard quiz