Based on 2,088 research-grade iNaturalist flowering observations in Colorado, Fireweed blooms mainly from July to August, peaking in July. It ranks #3 among wildflowers recorded in the state in our data.
Chamaenerion angustifolium
Fireweed in Colorado 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 Colorado in July
Blue Columbine
Gunnison's Mariposa Lily
Rocky Mountain Beeplant
Richardson's geranium
Edible Valerian
Scarlet Gilia
Elephant's-Head lousewort
Sulfur Buckwheat
Places to look in Colorado
National ForestWhite River National Forest
Botanical GardenDenver Botanic Gardens
National ForestRio Grande National Forest
National ForestSan Juan National Forest
State ParkRoxborough State Park
State ParkMancos State Park
FAQ
When does Fireweed bloom in Colorado?
Mainly July–August, with the most records in July.
How common is Fireweed in Colorado?
It ranks #3 by number of iNaturalist flowering observations among wildflowers in Colorado (2,088 records in our sample).