- You will get 500+ Seeds of Kohlrabi White Vienna Heirloom NON-GMO Vegetable Seeds. - Kohlrabi White Vienna Vegetable Seeds. - 500+ Seeds. - Maturity: 55 Days. - Plant Height: 10-12". - Planting Depth: 1/2". - Distance Apart In Row: 3-6". - Rows Apart: 30-36". - Plant In Full Sun After Chance Of Final Frost. - Sunlight: Full Sun. - Watering: Medium.