3212- Giant Winter Spinach - 50 days. Dark green, glossy leaves are deeply savoyed and selected for cold hardiness. High-yielding variety recommended for fall crops, winter greenhouse production, or over wintering outdoors under mulch. Direct seed in early spring, as soon as the soil can be worked, for a spring crop, and in August for harvest in the late fall. Enrich soil well with mature compost. Harvesting tips. Harvest leaves or the whole plant before it goes to seed.