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Accent · Border · Naturalized · Childrens · Cottage · Cutting · Pollinator
Data sources
Giant Allium
Allium giganteum · Perennial
Giant Allium is a moderate-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 and 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
- Toxic to
- People
- Native to
- Central and western Asia
Will it survive your winters?
We score Giant Allium’s freeze-trouble range against the real coldest nights your area has recorded.
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.
More plants for your zone: Zone 5 · Zone 6 · Zone 7 · Zone 8
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