The Value of Allium
Alliums are architectural elements in the garden. The flower head shapes vary from oval to round globes to cup-shaped with upright, spiky foliage that can be thin or flat. Taller Alliums, 15-30 inches, make an impact when massed in the back border. Plant shorter 6-12 inch specimens in rock or woodland gardens. They are great in containers, regardless of their height.