Seed spinach again in late summer for fall and early winter harvest. Spinach can be grown in hotbeds or protected cold frames for winter salads. Back To Top Spacing and Depth of Planting Sow 6 to 12 seeds per foot of row. When the plants are 1 inch high, thin to 2 to 4 inches apart. The rows may be as close as 12 inches, depending upon the method used for keeping weeds down.
Little cultivation is necessary.
Care Spinach grows best with ample moisture and a fertile, well-drained soil. Usually, no supplemental fertilizer is needed. If growth is slow or the plants are light green, sidedress with a nitrogen fertilizer containing sulfur. Cut the plant at, or just below, the soil surface. Spinach is of best quality if cut while young.