Ornamental Onion, Medusa

Allium ‘Medusa’

a durable, low-maintenance perennial onion that produces 2-inch wide, amethyst-purple, globe-shaped flowers from late summer to early fall.  It is named for its gray-green, twisting foliage and nodding, snake-like buds. Growing 18-24 inches tall, this drought-tolerant plant thrives in full sun and is deer-resistant.