Although March tends to be a month of planting, there are still jobs that can be done in the garden before your plants go in, including feeding and turning over the soil in the vegetable beds, ensuring that a good amount of manure is mixed in (which acts like a natural fertiliser and can be purchased relatively cheaply).
It is also important to purchase at least an extra water-butt, particularly with the current water-shortage issues that are hitting certain parts of the UK (with the hosepipe ban coming into affect at the beginning of next month). Not only will you save on your water-consumption but it is also more natural for plants to be watered with rainwater that contains fewer chemicals.
March at a glance: Feed and turn over vegetable plots. Buy seeds (if haven't already) along with peat-free compost. Buy and set-up water-butts to collect rainwater. Plant hardy vegetable seeds straight outside. Transfer onions, potatoes and peas outside.