Getting started early. first up, soil prep. This is compost that I just kept adding to for the last two years in my composter. Black Gold All the stuff in the back (beets, turnips and peas) will be getting turned into the soil. The peas are nitrogen fixing, meaning they take nitrogen from the air and store it in the soil. All of it acts as "green manure" when you turn it into the soil and it decomposes.