Millenium Flowering Onion
Overview: A flowering onion grown for its rose-purple, globe-shaped flower clusters.
Mature size: Approximately 1–2 ft. tall and 0.5–1 ft. wide.
Sun exposure: Full sun
Flowering season: Late spring to early summer
Hardiness: USDA Zones 3–9, depending on cultivar
Water needs: Average; well-drained soil is important, especially during summer dormancy
Special features: Unlike many ornamental onions, the grassy foliage stays attractive through bloom instead of fading first. Bulb perennial in the onion family, grown for its globe-shaped flower clusters on tall, leafless stems; foliage often fades before or during bloom, so plant among later-emerging perennials to hide it; deer- and rabbit-resistant
Wildlife value: Bees and butterflies
Botanical name: Allium 'Millenium'
Category: Perennial