FoliageGiant Allium
Allium giganteum
Giant Allium (Allium giganteum) is a medium-growing perennial, hardy in USDA zones 5-8, that matures to about 3-5 ft × 1.5-2 ft. It does best in full sun with medium water needs in well-drained soil. Expect pink and purple blooms in spring and summer. It attracts butterflies, stands up well to deer and rabbits.
- USDA zones
- 5-8
- Sun
- Full sun
- Water
- Medium
- Mature size
- 3-5 ft × 1.5-2 ft
- Growth rate
- Medium
- Maintenance
- Medium
- Soil
- Well-drained
- Bloom color
- Pink, Purple
- Bloom season
- Spring, Summer
- Attracts
- Butterflies
- Tough against
- Deer, Rabbits
- Native to
- Central and western 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 — Giant Allium is hardy to about -20°F (estimated from USDA zone 5), 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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