Recommend you take a quick trip over to the QDMA site and look on their food plot forum. The chances are EXCELLENT that exactly the same question has been asked and already answered. Just shooting from the hip, considering the climate and sunlight that you seem to have, consider one of the white clovers that is bred especially for growing in low light or shade conditions. You won't get much the first year because the plant is using that for root growth, but from the second year on they should give you a good attractant. I'll echo the previous poster on the turnips, but be careful. Like any of the brassicas, there is a limit to how many years you can plant it before you have problems. Usually anything past the second year, you're asking for trouble. Before you spend any $$ other places on the food plot, I'd throw $30 in the pot and get QDMAs book on Quality Deer and Quality Food Plots. Written by some agronomy Ph Ds who do this for a living. Have fun........