Allium 'Pink Planet' has bluish-green, twisting foliage and dense balls of silver-pink flowers in late summer.

Allium stipitatum 'White Giant' is the tallest of the white ornamental onions with huge 6-8 inch wide, pure white spheres.

Allium tanguticum 'Summer Beauty' blooms in mid to late summer with numerous spheres of lavender-pink flowers popular with pollinators.

Allium triquetrum, three-cornered leek, is a rare, edible species tolerant of shade with loose clusters of white, bell-shaped flowers.

Allium 'Cameleon' has charming, playful flower heads that emerge dusky pink and fade to white with pink veining.

The impressive Allium ‘Dutchman’ can produce lavender purple spheres up to 8 inches across on stems 2-3 feet high.

Allium 'In Orbit' is an ornamental onion that forms 3 inch wide drumstick spheres of lavender-purple.

Allium 'Lavender Bubbles' is an ornamental onion with dark purple, bubble-shaped flowers and blue-green twisty foliage.

Allium 'Magic' is an ornamental onion with half spheres of bold magenta-purple flowers.

Allium 'Medusa forms rounded clusters of light amethyst purple flowers that rise above low mounds of grey-green, twisty foliage.

Allium 'Medusa's Hair' is an ornamental onion with snake-like, green foliage and purple flower spheres.

Allium 'Mercurius' forms tall, 2-3 foot stems topped with half globes in a rich, saturated shade of raspberry wine.

Allium 'Metallic Shine' makes spectacular, metallic purple blooms 10-12 inches wide composed of hundreds of loose, star shaped flowers.

Allium 'Miami' forms tall, 2-3 foot stems topped with half orbs of rich purple, star shaped flowers loosely arranged in 3-4 inch heads.

Allium 'Millenium' forms fantastic two inch spheres on tall stems like rose-purple balloons floating in the summer garden.

Allium 'Mount Everest' is a vigorous, long-lasting cultivar with white, baseball-sized spheres atop three foot tall stems.

Allium 'Ostara' is a new hybrid with dramatic leaves that remain green through flowering and large, deep reddish purple spheres on 16 inch stems.

Allium 'Peek-a-Boo' provides summer interest with lavender-purple flowers and green strap-like foliage.

Allium 'Pinball Wizard' hails from the same cross as the classic 'Globemaster' producing 6-8 inch wide lavender purple spheres on shorter stems to two feet tall.

Allium 'Ping Pong' has unusual, fuzzy looking spheres of white flowers opening from buds tinged pink.

Allium 'Pink Jewel' produces distinctive pink spherical flower heads about 3 inches wide on stems to almost 3 feet high.

Allium 'Powder Puff' offers large lavender-purple heads the size of tennis balls atop short stems to about 20 inches tall.

Allium ‘Purple Rain’ produces semi-open spheres of grape purple, star-like florets on stems 3 feet high.

Allium 'Round and Purple' offers some of the largest flower heads in the world of ornamental onions reaching 6 inches or more across.

Allium 'Serendipity' forms two inch spheres on tall blue-green stems like rose-purple balloons floating in the summer garden.