A bloom calendar for Colorado built from 58,919 research-grade iNaturalist observations of plants in flower. July 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
Colorado wildflower calendar (top 40)
Fewer More observations (relative to each row's peak month)
Activity by month (all species)
Most-photographed wildflowers in Colorado
Blue Columbine
Gunnison's Mariposa Lily
Fireweed
Rocky Mountain Beeplant
Prairie Pasqueflower
American plum
Purple Groundcherry
Field Bindweed
Common Starlily
Sulfur Buckwheat
Edible Valerian
Scarlet Gilia
Showy Milkweed
Richardson's geranium
Bearberry
Elephant's-Head lousewort
