Direct sow saskatoon berry seeds in spring when there's no danger of frost. Saskatoon berries grow best in rows spaced at least 9 feet apart, with the plants spaced 3 feet apart within the rows.
Plant the seeds in sandy loam soil on a slight incline for optimal air flow and drainage.
Water the young plants regularly, keeping the soil moist as the roots become established. Once the roots are established give the bush 1 inch of water each week.
Fertilize the bushes with a 23-23-0 or 27-14-0 fertilizer annually between the time the plant flowers and the harvest.
Prune the bushes back at 5 years old, cutting away three to four of the oldest branches. This will make fresh, new fruit-producing growth.