Based on 2,255 research-grade iNaturalist flowering observations in Massachusetts, Pink Lady's Slipper blooms mainly from May to May, peaking in May. It ranks #1 among wildflowers recorded in the state in our data.
Cypripedium acaule
Pink Lady's Slipper in Massachusetts 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 Massachusetts in May
Northern Starflower
Azure Bluet
Wood Anemone
Wild Geranium
Canada mayflower
Garlic Mustard
Fringed Polygala
Red Trillium
Places to look in Massachusetts
Botanical GardenArnold Arboretum
Botanical GardenBoston Public Garden
Botanical GardenBerkshire Botanical Garden
State ParkHalibut Point State Park
State ParkHammond Pond Reservation
State ParkTolland State Forest
FAQ
When does Pink Lady's Slipper bloom in Massachusetts?
Mainly May–May, with the most records in May.
How common is Pink Lady's Slipper in Massachusetts?
It ranks #1 by number of iNaturalist flowering observations among wildflowers in Massachusetts (2,255 records in our sample).