maturity date:120 days ....this purple artichoke. Is a imperial star type is non gmo. And if not a hybrid which means you get the true plant and flavor and the purple artichoke is both more cold hardy and heat tolerant so it can be grown in a lot more place than the green. With this variety its totally possible to. Grow as a annual... Which means you will have loads of artichokes the first year. Order some of this heirloom artichoke seed today. happy growing!!!