I love strawberries but only have a courtyard so... Hubby got hold of a 6 ft length of 6 inch plastic pipe and cut lots of 2 inch holes in it about 8 inches apart. Bunged up the bottom and drilled a couple of small holes in it, filled it with compost and put a strawberry plant in each hole. We grow 20 strawberry plants in a 6 inch square space and get the fruit from May to October with the summer months providing for a family of 5 at least once per week. Watering is a pain, it seeps out the top holes and we need to ensure it gets enough water to reach the bottom.
The idea has caught on, here is a recent commercial version
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We have also grown tomatoes and peas in pots without success, potatoes and lettuce with great success.
We won an apple tree and had nowhere to plant it so its gone into a 30 inch pot which it seems to love. Only a few apples least year but if the blossom is anything to go by we should get plenty this year. I have no idea what to do when it outgrows the pot, we have no space for a larger one.
We also have a veranda on the first floor that has 3 largish and deep, 20 inch containers,. One growing a fig tree and the other two with grapes, the vines trained along the outside of the balustrade. October time home grown grapes and figs are just wonderful
Bell peppers we do ok with, usually we grow a couple of plants each year but they are kept indoors in the laundry room (which is mostly glass so bright and warm). The fruit are small and we don't get more than a couple of meals out of them but the flavour is awesome.
We also grow/use a lot of basil, several pots over the year, a container of mint and one of rosemary. The mint needs strict discipline to keep it under control
The only other thing we have is a lemon tree, only about 4 ft tall but its it's never fruited but its fun to grow and we live in hopes