Overview
Allium rubrum is a clump forming bulbs in the genus Allium, part of the Amaryllidaceae family, with deciduous foliage. Allium rubrum grows best in full sun, and tolerates most soils and any pH. Its UK hardiness is rated H6. Suggested uses include city and courtyard gardens, cottage and informal garden, gravel garden, patio and container plants, wildlife gardens, cut flowers and flower borders and beds.
About
Allium rubrum is a clump-forming cultivar within the Allium genus, known for its bulbous herbaceous perennial habit and distinctive onion or garlic aroma. It produces deciduous, linear leaves from the base and star- or bell-shaped flowers arranged in umbels atop leafless stems. Suited to full sun and a variety of soil types including chalk, clay, loam, and sand, it thrives in well-drained conditions and is hardy to UK zone H6. This cultivar is ideal for diverse garden settings such as city gardens, cottage borders, gravel areas, and containers, offering interest in spring and summer.
Growing conditions
Best soil and position for Allium
- Sunlight
- Full sun
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Acid, Alkaline, Neutral
- Soil moisture
- Well-drained
- Aspect
- South-facing, West-facing, East-facing
- Exposure
- Exposed, Sheltered
- UK hardiness
- H6
Plant details
Allium rubrum size, habit and characteristics
- Plant type
- Bulbs
- Habit
- Clump forming
- Foliage
- Deciduous
- Suggested uses
- City and courtyard gardens, Cottage and informal garden, Gravel garden, Patio and container plants, Wildlife gardens, Cut flowers, Flower borders and beds
Care notes
Pruning and caring for Allium rubrum
- Propagation
- Offsets, Seed
- Pest resistance
- Allium leaf miner, Onion fly
- Disease resistance
- Onion white rot, Onion downy mildew
Frequently asked questions
Where is the best place to plant Allium rubrum?
Allium rubrum prefers full sun. It suits exposed and sheltered positions.
What soil does Allium rubrum need?
Allium rubrum is adaptable and grows happily in most soil types, including chalk, clay, loam and sand. It is happy in soil of any pH. Aim for soil that stays well-drained.
Is Allium rubrum hardy in the UK?
Allium rubrum 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 rubrum?
Offsets, Seed.
More in the Allium genus
- Allium 'Garlic White'garlic 'Garlic White'
- Allium 'Japanese White'garlic 'Japanese White'
- Allium 'Judith'
- Allium affine
- Allium akaka
- Allium alexeianum
- Allium amethystinumamethyst allium
- Allium amplectensnarrowleaf onion
