Posted: 12/10/2014 at 15:43
Newboy2, what a lot of us do is dig a trench now and keep throwing in vegetable matter such as kitchen waste and shredded garden prunings, pulled-up annual weeds and the like, often adding shredded newspaper and cardboard. At the end of the winter, we cover the open trench with soil and by the time it comes to bean-planting time, it will have all rotted down and will help to hold moisture deep down which bean roots love.
You can grow just about anything in raised beds with the possible exception of the taller brassicas as those need firm soil to do well. Beans usually thrive providing you keep up with the watering.