I just started a garden at my college. The soil here is clay, not just clay-y but pretty much just clay. Intending to start a bed this spring I mixed some potting soil (left over from a friends container gardening endeavor) and some compost. I then planted some beans, primarily to put nitrogen in the soil (maybe with some luck I'll get some beans before winter kills them). I'll soon have some chicken manure aging to mix in for the spring, and some compost going. I was wondering if anybody had some suggestions for how to improve the soil.