Based on 1,020 research-grade iNaturalist flowering observations in Colorado, Purple Groundcherry blooms mainly from May to June, peaking in May. It ranks #7 among wildflowers recorded in the state in our data.
Quincula lobata
Purple Groundcherry 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 May

Prairie Pasqueflower
American plum

Common Starlily
Bearberry

Creeping Mahonia

Field Bindweed

Saskatoon

Common Lilac
Places to look in Colorado
White River National Forest
Denver Botanic Gardens
Rio Grande National Forest
National ForestSan Juan National Forest
Roxborough State Park
Mancos State Park
FAQ
When does Purple Groundcherry bloom in Colorado?
Mainly May–June, with the most records in May.
How common is Purple Groundcherry in Colorado?
It ranks #7 by number of iNaturalist flowering observations among wildflowers in Colorado (1,020 records in our sample).