Based on 1,043 research-grade iNaturalist flowering observations in Maine, Pink Lady's Slipper blooms mainly from May to June, peaking in June. It ranks #3 among wildflowers recorded in the state in our data.
Cypripedium acaule
Pink Lady's Slipper in Maine by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also in bloom in Maine in June
Sheep Laurel
Northern Starflower
Canadian bunchberry
Azure Bluet
Three-Toothed Cinquefoil
Northern Bush Honeysuckle
Partridgeberry
Canada mayflower
Places to look in Maine
State ParkBaxter State Park
State ParkFort Halifax
State ParkTwo Lights State Park
State ParkQuoddy Head State Park
State ParkFort Point State Park
State ParkPopham Beach State Park
FAQ
When does Pink Lady's Slipper bloom in Maine?
Mainly May–June, with the most records in June.
How common is Pink Lady's Slipper in Maine?
It ranks #3 by number of iNaturalist flowering observations among wildflowers in Maine (1,043 records in our sample).