In fertile soil, enriched with organic matter high in nitrogen, plant as early as ground can be worked. Spinach likes cool weather. Plant again in late August for a fall crop. Sow thinly, about inch deep. Thin seedlings to 1 to 3 inches apart.
Harvest leaves as soon as they are big enough to eat.
When the plant is starting to look old, cut whole plant back to 1 to 2 inches high to stimulate growth. If they begin to bolt, harvest and freeze the whole crop. Stands well in hot weather. It is not related to true spinach but the leaves taste similar, and some think, better than spinach. It is a very old heirloom, said to have been brought to England by Captain Cook because of its high vitamin C content.