Spade deeply . . . 12 to 15 inches. If some plants are growing in the bed, remove them and “heel” them into a small trench.
Add humus and drainage ma-terial … Stir or break up sub-soil if possible. Perennials do not like “wet feet.” Put drainage material (small rock and gravel) in the bottom of bed. Apply 1 pound of fertilzer to each 25 square feet of bed area. Work plant food into the soil. Turn the hose on the soil bed to hasten settling. After a few days it will be ready for transplanting.