Wild Lupine is a native perennial of dry, sandy sites in full sun. Flowering from late April/early May into June, the flower color ranges from light blue to dark purple.
According to Illinois Wildflowers, there is no nectar reward provided by Wild Lupine, and pollen is forcibly ejected into the faces of bees.
Wild Lupine and Mason Bees were built for each other, as Mason Bees collect pollen on their abdomens. Perfect for where the fused stamens are located just above the bottom keel, rubbing off some pollen for cross-pollination onto the Mason Bee abdomen.
Wild Lupine is a larval host plant to several butterfly and moth species, the most notable is the specialist Karner Blue Butterfly (Lycaeides melissa) an endangered butterfly.