fourmations wrote:
I have a good amount of unused space at a side passage at my house
it only gets sun until about 11am - 12midday
I fancied putting rows of purpose built long boxes
on wall brackets on top of each other
(like a shelving arrangement)
what would grow well, considering the amount of shade?
how deep for the boxes?
I was going to sheet them with clear plastic (like a cold frame) is this
necessary
i fancy salad greens, pak choi, spring o's, herbs, shallots, garlic
tomatoes (probably need more sun)

I wouldn't grow tomatoes - but all herbs and salads (lots of salads!).
The only vegs that comes to mind is peas and runner bean which don't
mind shade, especially during the hotest part of the day. However they
need lots of water in well drained containers. As for the shallots and
garlic ... I'm not too sure. A full day of sunshine is usually good for
them. They're prone to damp/humidity situations.