I was on some allotments at the weekend and was struck how bare and scruffy they look at this time of year. We've passed the Spring equinox, but seedlings…
You should grow in fertile well-drained soil with full sun. The bulbs should be planted in the autumn and will prefer to be grown in hot dry areas in a sandy loam-based potting compost.
You can grow from seed when ripe in the spring, or divide the clumps, also in the spring.
Pests, diseases or disorders
Watch out for onion fly, downy mildew and white rot.