
Based on 1,910 research-grade iNaturalist flowering observations in Massachusetts, Northern Starflower blooms mainly from May to May, peaking in May. It ranks #2 among wildflowers recorded in the state in our data.
Lysimachia borealis
Northern Starflower 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

Pink Lady's Slipper

Azure Bluet
Wood Anemone
Wild Geranium

Canada mayflower
Garlic Mustard

Fringed Polygala

Red Trillium
Places to look in Massachusetts
Arnold Arboretum
Boston Public Garden
Berkshire Botanical Garden
Halibut Point State Park
Hammond Pond Reservation
Tolland State Forest
FAQ
When does Northern Starflower bloom in Massachusetts?
Mainly May–May, with the most records in May.
How common is Northern Starflower in Massachusetts?
It ranks #2 by number of iNaturalist flowering observations among wildflowers in Massachusetts (1,910 records in our sample).