Based on 2,104 research-grade iNaturalist observations in Minnesota, Black Swallowtail is most often recorded in July; in Minnesota it behaves like a summer visitor / breeder. It ranks #5 among butterflies recorded in the state in our data.
Papilio polyxenes
Black Swallowtail in Minnesota 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 seen in Minnesota in July
Monarch
Red Admiral
Eastern Tiger Swallowtail
Northern Pearly-eye
Great Spangled Fritillary
Common Wood-Nymph
Small White
Peck's Skipper
Places to look in Minnesota
National ForestChippewa National Forest
Botanical GardenUniversity of Minnesota Landscape Arboretum
State ParkItasca State Park
State ParkJudge C. R. Magney State Park
National ForestSuperior National Forest
State ParkFlandrau State Park
FAQ
When does Black Swallowtail appear in Minnesota?
Mainly June–September, with the most records in July.
How common is Black Swallowtail in Minnesota?
It ranks #5 by number of iNaturalist observations among butterflies in Minnesota (2,104 records in our sample).