We were reading about companion planting a couple of nights ago - nothing too detailed - and learnt that 'Onions, particularly garlic, have a strong sulphur smell that deters and confuse pests'. [Caroline Foley ~ 'How to Plant your Allotment, p 95] So I decided, as we have half a bed already growing away that I would plant up the other spare ones in the cold frame into pots, so they can be moved aroun