About
Allium cepa 'Autumn Gold Improved' is a bulbous perennial cultivated primarily for its edible bulbs. It features erect, bluish-green foliage and yields smooth, round white bulbs that can reach approximately 8 cm in diameter, encased in a light brown skin. Harvesting occurs in late summer to early autumn.
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
- 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
- 0-0.1 metre
- Time to full height
- 1 year
Care notes
- Cultivation
- Grow in deep, fertile soil in a sunny spot. This cultivar has some resistance to bolting. See the RHS A-Z guide to vegetable cultivation for more detailed advice
- Pruning
- No pruning required, foliage will yellow and topple over when ready to harvest
- 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, allium leaf miner, leek moth and stem and bulb eelworm
- Disease resistance
- May be susceptible to onion white rot, leek rust and onion downy mildew