Sow (with heat):leeks, onions, hybrid broccoli, mini cauliflower, celeriac, celery, asparagus

Sow under cover (mild gardens only):beetroot, broad beans, Brussels sprouts, leeks, summer and autumn cabbage, carrots, lettuce, radish, orache, Japanese bunching, main crop & spring onions, peas (mild areas only), cut-and-come-again crops

Sow outdoors (in mild areas and good growing conditions):broad beans, peas, onions, kohl rabi, parsnip, radish, spinach

Plant:garlic (well-drained soils only), onion sets, rhubarb (as sets), spring cabbage, shallots, Jerusalem artichokes

Do:dig and manure soils where they aren't frozen or waterlogged, prepare seedbeds, disinfect glasshouses/ polytunnels/seed trays, and so on, order seed and seed potatoes, start chitting seed potatoes, plan crop rotations for this year, lift remaining parsnips, thin overwintering onions, check stored fruit and veg (apples, potatoes, onions, carrots) for rot and frost damage, net brassicas to protect from pigeon damage