Where do Karner blues go in the winter?
The second annual generation of Karner blues lays eggs on lupine or nearby grasses at the end of summer. The eggs remain attached to the plants through the fall and winter, when the plants die back and are covered by winter snows. Snow cover may insulate the eggs and cushion them from impact. These eggs hatch in mid-April to produce the first Karner blues of the year. For more information about the Karner blue life cycle, see the DNR Karner Blue Ecology fact sheet.
