Overview
Allium tuberosum is a clump-forming perennial herb in the genus Allium, part of the Amaryllidaceae family, with deciduous foliage. It typically grows around 0.3 m tall and 0.3 m wide. Allium tuberosum grows best in full sun, and tolerates most soils and any pH. Its UK hardiness is rated H6. Suggested uses include borders, cut flowers, dried flowers and architectural planting. It is native to Assam, China North-Central, Nepal and West Himalaya.
About
Allium tuberosum is a species of plant native to the Chinese province of Shanxi, and cultivated and naturalized elsewhere in Asia and around the world. It has a number of uses in Asian cuisine.
Wikipedia contributors, CC BY-SA 4.0 — Allium tuberosum
About the genus
Allium is a large genus of monocotyledonous flowering plants with 1112 accepted species, making Allium the largest genus in the family Amaryllidaceae and among the largest plant genera in the world. Many of the species are edible, and some have a long history of cultivation and human consumption such as the onion, garlic, scallions, shallots, leeks, and chives.
Wikipedia contributors, "Allium", CC BY-SA 4.0 — Allium
Growing conditions
Best soil and position for Allium
- Sunlight
- Full sun
- Soil type
- Loam, Sand, Chalk
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, East-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H6
Plant details
Allium tuberosum size, habit and characteristics
- Plant type
- Perennial herb
- Habit
- Clump-forming
- Foliage
- Deciduous
- Height
- 0.3 m
- Spread
- 0.3 m
- Suggested uses
- Borders, Cut flowers, Dried flowers, Architectural planting
- Native to
- Assam, China North-Central, Nepal, West Himalaya
- Fragrance
- Mild garlic scent
Care notes
Pruning and caring for Allium tuberosum
- Cultivation
- Prefers well-drained soil and full sun; can be grown from seed or offsets; mulch in winter in colder climates
- Pruning
- Cut back after flowering to encourage fresh growth
- Propagation
- Offsets, Seed
- Pest resistance
- Allium leaf miner, Onion fly
- Disease resistance
- Onion white rot, Onion downy mildew, Leek rust
Frequently asked questions
How do I grow Allium tuberosum?
Prefers well-drained soil and full sun; can be grown from seed or offsets; mulch in winter in colder climates.
Where is the best place to plant Allium tuberosum?
Allium tuberosum prefers full sun. It suits sheltered positions.
What soil does Allium tuberosum need?
Allium tuberosum is adaptable and grows happily in most soil types, including loam, sand and chalk. It is happy in soil of any pH. Aim for soil that stays well-drained.
How do I prune Allium tuberosum?
Cut back after flowering to encourage fresh growth.
How big does Allium tuberosum grow?
Allium tuberosum reaches a height of 0.3 m and a spread of 0.3 m.
Is Allium tuberosum hardy in the UK?
Allium tuberosum has an RHS hardiness rating of H6, meaning it is very hardy, tolerating -20 to -15°C across most of the UK.
How do I propagate Allium tuberosum?
Offsets, Seed.
More in the Allium genus
- Allium 'Judith'

- Allium 'Summer Beauty'

- Allium cepa 'Goldito'
- Allium christophii (albopilosum)Star of Persia

- Allium hookeri 'Zorami'Hooker Chives

- Allium phanerantherumconspicuous-anthered garlic

- Allium 'Millenium'
- Allium schmitzii