Liatris, sometimes called Blazing star or Gayfeather, is a great perennial for butterflies. Grows 2 - 4' tall, best in full sun but will tolerate light shade. Blooms mid to late summer so it's a perfect nectar plant for migrating Monarchs. Deer resistant and does well in poor soil conditions and drought. Soil must be well drained as sitting in wet soil will cause the bulbs to rot. Easy to divide plants in the Spring.