Spinach quality may not be good in hot weather. Provide a rich, moist soil as on dry, poor soil the plant may go to seed. Spinach is sensitive to poor soil aeration. Spring planting is done from late March to mid-April with late season plantings done in July. Plant seed 1/4 to 1/2 inch deep with the plants 3 to 6 inches apart in rows 12 to 18 inches apart. Thin to the above spacings when plants are an inch tall. Spinach is a heavy feeder. Use 1 to 1 1/2 pounds of 5-10-5 per 50 feet of row. If the foliage begins to yellow during the growing season, sidedress the row with nitrogen. Remove any plants which go to seed. If not adequately watered bolting occurs.
Harvest spinach when the plants have 6 to 8 leaves. Cut the plant off at the soil line.
Bolting occurs if the plants are not adequately watered.