Outsidepride Artichoke Violet Herb Plant Seed - 200 Seeds Artichoke Violet grows as a perennial in USDA Zones: 7 - 10. It thrives in full sun and is both heat and cold tolerant. Globe Artichoke or Cynara scolymus is an edible herb that grows approximately 40 inches tall and will create an exotic look to your garden with its purple flower heads. This plant can be used ornamentally or for its flavorful flower buds. The flower buds are edible in the early summer. Sow these heirloom seeds at 2 - 3 seeds per plant and keep moist until germination occurs. Our seeds are always Non-GMO and packaged for the current year.