My allottment is the back garden, and the shed is the house
You can get the basic info you need on sowing times on the back of the seed packets. But if you start with pretty bombproof stuff like carrots, parsnip and beetroot, you can sow that as soon as the ground starts warming up in spring. I aim to get these in by the end of March, but if it's a late season don't fret if they're not in bu late April. They'll catch up.
If you haven't a greenhouse then onion setts are better than seed, though you can sow salad onions in batches, along with lettuce.
French beans are dead easy. Sow and f