Posted: 13/08/2017 at 12:31
Pots can be very limiting for most seasonal British veg and require lots of watering and feeding. Greenhouses are good for starting seeds early, growing on seedlings and cuttings and keeping tomatoes warm enough to ripen but perhaps less so for toms if it's shaded by the yew.
If you are serious about feeding a family I advise you to create some raised beds using pressure treated timbers at least 6" high. Make them 1m20 wide - easy access form both sides and easy to cover with tunnel cloches and insect netting as needed - and as long as you like but you will need at least 3 distinct areas for crop rotation so you can manure one bed each year and grow peas and beans in it, followed by brassicas and then root crops such as onions and carrots. If you want to grow potatoes too add a 4th bed and also a permanent bed for perennials such as rhubarb, asparagus, globe artichokes. 5th bed for soft fruits and another for fruit trees such as apples, pears, cherries, plums.
See here for more info - https://www.rhs.org.uk/advice/profile?PID=124
Build your frames on a flat surface then fork over the soil within to remove visible weeds and their roots and then pile on as much well rotted manure, garden compost, kitchen waste etc as you can and cover with cardboard for the winter. This will keep in moisture and keep out the light so the worms and other soil organisms can work over the soil for you.
Go to the library and check out books on organic veggie gardening and DVDs.
Watch The Beechgrove Garden every week for practical tips on methods and varieties and Gardeners' World too.