- You will get 1000 Seeds of White Vienna Kohlrabi Non-GMO Heirloom Vegetable Seeds. - Genus: Brassica. - 1000 White Vienna Kohlrabi Seeds Non-GMO Heirloom. - White Vienna kohlrabi features globe-shaped bulbs that are light green. Flesh is clear-white, tender and crisp. 55 days. - Name: Kohlrabi Seeds - White Vienna. - Botanical Name: Brassica oleracea. - Fruit Size: 4". - Days to Maturity: 60 Days.