This year I tried something different, a couple of polyculture beds. Basically you just chuck everything in together, whether they are 'supposed' to go together or not, and hope for the best! I am sure it is probably supposed to be more technical than that, but I am a lazy gardener. The upshot is that it seems to have worked and the plants are all happy. I have just had my first harvest of turnips and broad beans from the bed and am thinking risotto tonight. This harvest is ahead of the other beds where the veggies are planted in a more traditional way. Where I have taken stuff out I will pop something else in later, such as some brassicas.