FoliageMillenium Ornamental Onion
Allium 'Millenium'
Millenium Ornamental Onion (Allium 'Millenium') is a medium-growing perennial, hardy in USDA zones 4-9, that matures to about 1-2 ft × 1-1.5 ft. It does best in full sun with medium water needs in well-drained soil. Expect yellow, pink and purple blooms in summer. It attracts bees and butterflies, stands up well to deer, grows happily in containers.
- USDA zones
- 4-9
- Sun
- Full sun
- Water
- Medium
- Mature size
- 1-2 ft × 1-1.5 ft
- Growth rate
- Medium
- Maintenance
- Medium
- Soil
- Well-drained
- Bloom color
- Yellow, Pink, Purple, Red, White
- Bloom season
- Summer
- Attracts
- Bees, Butterflies
- Tough against
- Deer
- Toxic to
- Humans
- Native to
- Asia
In the landscape
Data sources
Freeze survival
Will it survive your winters?
Hardiness zones show a normal bad winter. We check the worst one — Millenium Ornamental Onion is hardy to about -30°F (estimated from USDA zone 4), so we'll score it against the real coldest nights your area has actually had.
Powered by ~35 years of daily lows from the nearest NOAA weather station. A risk read, not a guarantee — a sheltered spot or mature plant beats the odds.
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