- You Will Get 25 Seeds of Cardoon Cynara Cardunculus Garden NON-GMO Vegetable Seeds. - Cardoon Vegetable Seeds. - Cynara Cardunculus. - 25 Seeds. - Maturity: 75 Days. - Plant Height: 3-4'. - Planting Depth: 1/4". - Distance Apart In Row: 18-24". - Rows Apart: 36-48". - Plant In Full Sun. - Life Cycle: Perennial. - Sunlight: Full Sun, Partial Shade, Full Shade, Medium Sun. . - Watering: Medium.