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…
Plant at a depth of approximately 13cm.
Propagation is by offsets, by seed in autumn or by division of clumps (spring flowering varieties in late summer and summer flowering varieties in spring).
Pests, diseases or disorders
Prone to white rot, downy mildew, eelworm, rust and onion fly.