The illustration shows a plot I established some
years ago using a grid system rather than rows
and employing the spacings that the author had
carefully worked out for a whole range of
vegetables, including climbers, across the year.
Although I no longer use the system I found it
to be most successful.
Because the soil base of the garden is wind blown sea sand it attracts a large population of snails and the hanging containers is one of the most successful ways I have tried for keeping them away from the more tender salad plants. Picture wire is used to hang the pots which are suspended in the greenhouses.