A bloom calendar for Wisconsin built from 51,488 research-grade iNaturalist observations of plants in flower. May is the busiest bloom month. Pick a month to see what's flowering, or open a species for its state-by-state timing.
By month
Wisconsin wildflower calendar (top 40)
Fewer More observations (relative to each row's peak month)
Activity by month (all species)
Most-photographed wildflowers in Wisconsin
Large White Trillium
Bloodroot
Red Columbine
Dutchman's breeches
Wild Bergamot
Wild Geranium
Marsh Marigold
Wood Anemone
Northern Starflower
White Snakeroot
Jack-in-the-Pulpit
black-eyed Susan
Pink Lady's Slipper
Large-Leaved Aster
Virginia bluebells
Common Jewelweed
