Nearing Northern Limits
Traveling in pursuit of milkweed, monarchs are nearing milkweed's northern limits - and the end of spring migration.
In the central region, the northernmost first sightings of monarchs have reached milkweed’s northern limit in southern Manitoba and in several of the Great Lakes Islands, notably Beaver Island and Manitoulin Island.
Females are laying eggs of the 2nd generation now. These monarchs will be the grandchildren of butterflies that overwintered in Mexico. In central U.S., monarch caterpillars have been sighted as far north as Minnesota and sounthern Canadian province of Ontario.
Monarch generations are continuing to cycle. It takes about one month for each to develop. Over the summer, three generations will be produced in the north.
August: great-great-grandchildren—the generation that migrates to Mexico.
Report Your First
No matter when you see your first monarch, we want to know about it. Your sighting is important even if other people have already reported from your region.
Report your first sighting of a monarch adult, egg, and larva.