I realize that everybody does it differently, but I always plow my garden in the fall. Then as it gets dry in the spring, and I can plant, I work the ground then. I sometimes use a bottom plow, but most of the time I chisel plow for fall plowing. That helps it dry out better in the spring. When I plant early things like peas, potatoes, cabbage and the such, the ground is usually still a little on the wet side. So, with the ground already plowed in the fall, I can lightly work up a seedbed with a tiller, and plant. As it gets later in the year, I will work it deeper with heavier equipment.