Buy Artichoke seeds online. Artichokes have a reputation for being difficult to grow outside of the ideal conditions of California. Despite this reputation, it can be grown in most areas of the United States but it takes care. In warmer climates artichokes are considered perennials, in zones cooler than 8 they are best grown from seeds as an annual or dug up to overwinter in a protected place. They are actually a very unique kind of edible flower that is related to sunflowers. Artichokes were first cultivated in ancient Greece and Rome, they were generally only eaten by the Aristocracy and the ruling classes.