Cardoons are perennials that can be grown as such, but can also be grown as an annual in some regions. It requires a mildly cool, not cold - just cool climate and a growing season of about five months. As stated avoid Cold weather - it is not frost tolerant. The flower buds and stems are both edible, but the buds are most commonly sought after.
Jerusalem artichoke. is not related to true artichokes. It is in the sunflower family and closely resembles the common sunflowers. Also known as sunchoke, it is considered an invasive weed in some places.
Health Benefits of Artichoke. Artichokes are a largely overlooked vegetable. Eaten by few and grown by even less they are a tasty deviation from the standard blase fare. They can be eaten raw, steamed, baked, broiled and boiled as well as mixed into many other dishes and salads. Artichoke can be an appetizer or an entree and they have mega health benefits.