- You will get 100 Seeds of New Zealand Spinach Non-GMO Vegetable Seeds. - Genus: Tetragonia. - 100 New Zealand Spinach Seeds Non-GMO. - Zealand Spinach is not really a proper spinach at all. It looks and tastes similar to its namesake, but technically its botanical classification is a little different. - Nonetheless, this tasty and fascinating heirloom veggie has been grown since the 1770's after being initially introduced by famed British botanist Sir Joseph Banks, who collected it on his journey to the South Seas with Captain James Cook.