We love onions at GIY because they are one of those vegetables that it’s possible to become fully self-sufficient in, even if you don’t have a huge amount of space. A decent sized raised bed could produce a couple of hundred onions, which would be enough for most families for up to a year. Onions are relatively easy to grow and they store well. Above all, there’s nothing better than having onions hanging in your shed and knowing you don’t have to buy those dry, tasteless, imported supermarket onions this year. Sowing Onions grow best in a good fertile soil, so add compost and a general fertiliser for best results. There are two types of onions: autumn-sown onions and the far more common spring varieties. Onions can be grown from seed or small, dried immature onions called ‘sets’. Beginners often find growing from sets easier. To grow from sets, buy good quality sets in either the autumn or spring. Plant autumn varieties in September or October and spring varieties in late March or Apri...