Winter Giant Spinach Seeds. 50 Days to full maturity. Heirloom, Open Pollinated, and Non-GMO Seeds. Spinacia oleracea. AKA: Giant Winter Spinach. Giant Winter Spinach was selected as a late fall/early winter crop. The leaves are large, savoyed, and deep green. Winter Giant Spinach is very cold resistant. Popular in winter as it can be grown and harvested in the cold months for a fresh addition to your dining room table. Winter Giant Spinach does best when sown directly. The plants will be strongest at temperatures between 30-60 degrees, making it best for early spring and late fall growing. Its short harvest time of 50 days makes it easy to grow twice in one year, the spring, and the fall. About 2,100 seeds/oz.

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