Posted: 17/08/2013 at 17:15
Take yourself down to the garden centre or somewhere that sells seeds and read the packets. They will say when you can sow. You will probably be able to pick up reduced price packets which will be ideal for next year.
There is still time to sow salad leaves and other things. In Sept you can start off onion sets in modules for next year, to plant out later in the autumn.
If you are not an experienced gardener do not go mad, just pick out a few things you would like to grow.