Lupinus perennis blooms in late spring to early summer with tall spikes of indigo-blue flowers.
Lupinus perennis is a host plant for Eastern Tailed-Blue, Frosted Elfin, and the endangered Karner Blue butterflies . Deer resistant. Hardy in zones 3-8.
Scarify lupine seeds with sandpaper, then soak overnight. Sow outdoors after the last frost date. Or start indoors 6-8 weeks early. Full sun to part shade.