10 Bulb Bag.  Plant these once and they will come back year after year.  Often planted near plants like roses to help deter pests since they are in the onion family.  
 
Rich purple spheres on tall stems add height and interest to gardens.  Plant them in the middle areas and enjoy them from bud to seed pod.
 
Cut stems last a long time in arrangements.  If left in the garden, they are beneficial to insects.
 
Plant them 6-8" and watch them bloom in the spring.