We offer certified organic spinach seed for excellent varieties of savoy spinach, semi-savoy spinach and smooth leaf spinach. Savoy and semi-savoy spinach have crinkled, curly leaves with a springy texture. Smooth-leaf spinach has flatter, softer leaves . Organic spinach is a nutritional powerhouse, containing more iron by weight than a hamburger, in addition to significant amounts of vitamins A, K, manganese, folate and several anti-oxidant flavonoid compounds.