NDSU Extension Horticulturists Select a location suitable for plants, or plants suitable for the location. Check light exposure, drainage and fertility. Once you find suitable plants or location, prepare the soil. Prepare soil six to eight inches deep. Add organic matter to improve drainage in heavy clay soils and water holding capacity of sandy soils.
Organic matter can be peat moss, aged manure or compost.
Work material into the soil. Harden off the plants. This process prepares tender seedlings and transplants for the harsh outdoor environment. It takes about two weeks. Place plants in a somewhat shaded area and expose them to gradually longer durations of light over a two-week period.