Allium 'Millenium' is a clump-forming ornamental onion prized for its globe-shaped, rosy-purple flower heads and tidy mounds of glossy green, grass-like foliage. Blooming in mid-to-late summer, it brings structure, pollinators, and color to borders and containers alike. Deer- and rabbit-resistant, drought-tolerant, and easy to grow!
- Hardiness USDA Zones are 4 to 9
- Thrives in Full Sun
- Typically grows 12–20 inches tall and 10–15 inches wide
Note: Your plant is shipped potted and carefully packaged to ensure minimal damage during transit. Dormancy in fall/winter may cause plants to look dry or leafless—this is normal and temporary. California shipping restrictions may apply based on state regulations.
Frequently Asked Questions❓
Is Allium 'Millenium' attractive to pollinators?
🐝 Yes, it's a favorite among bees and butterflies during its vibrant bloom period.
Is this plant deer- or rabbit-resistant?
🦌 Yes, its aromatic foliage naturally keeps deer and rabbits away.
Does it work well in containers?
🪴 Absolutely! Its compact growth and upright blooms suit container gardening beautifully.
How much water does it need?
💧 Low. It's drought-tolerant once established and prefers well-drained soil.
How do I maintain or propagate it?
✂️ Divide clumps every few years in early spring or fall to keep it healthy and full.
Growing Zones: 4–9

Mature Height: | 12–20 inches |
Sunlight: | Full Sun |
Mature Width: | 10–15 inches |
Botanical Name: | Allium 'Millenium' |
Growth Rate: | Moderate |
Foliage: | Glossy, grass-like deep green leaves |
Plant Type: | Herbaceous Perennial |
Product Type: | Ornamental Flowering Perennial |