About
Allium cepa (Cepa Group) 'Centurion' is an early-maturing onion variety characterized by its upright, cylindrical, hollow leaves that exhibit a bluish-green hue. The bulbs are globe-shaped, featuring a golden-brown outer skin and creamy-white interior. This onion reliably produces a harvest from late summer to early autumn, offering a crisp texture and good storage potential.
About the genus
Allium consists of bulbous herbaceous perennials characterized by a pronounced onion or garlic aroma. They feature linear, strap-like, or cylindrical leaves that arise from the base. The flowers, which can be star-shaped or bell-shaped, are arranged in an umbel atop a stem that lacks leaves.
Growing conditions
- Sunlight
- Full sun
- Soil type
- Chalk, Clay, Loam, Sand
- Soil pH
- Alkaline, Neutral
- Soil moisture
- Moist but well-drained, Well-drained
- Aspect
- South-facing, West-facing
- Exposure
- Sheltered
- UK hardiness
- H3
Plant details
- Plant type
- Herbs - Culinary, Bulbs
- Habit
- Clump forming
- Foliage
- Deciduous
- Height
- 0.1-0.5 metres
- Spread
- 0.1-0.5 metres
- Time to full height
- 1 year
Care notes
- Cultivation
- Grow in a sunny, sheltered site in fertile, alkaline or neutral, well-drained soil. See Onions (Grow your own)
- Pruning
- No pruning required
- Propagation
- Propagate by seed or by onion sets. See how to grow: onions or sowing vegetable seeds
- Pest resistance
- May be susceptible to onion fly
- Disease resistance
- May be susceptible to onion downy mildew, onion white rot, onion neck rot and leek rust