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 4.0Allium 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 4.0Allium

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

Browse all Allium