Plant two feet apart.
Keep the soil evenly moist throughout the season.
Fertilize monthly with a liquid organic fertilizer.
You can keep your artichokes from one season to the next. In USDA Plant Hardiness Zones 7 and warmer, protect the plants with a thick mulch of straw. In colder regions, try this smart idea: Dig the roots in fall, shake off the dirt, and hang them in onion bags in a cool, dry place such as a root cellar. In spring, these more-mature root systems kick in right away when replanted in the garden.
Keep an eye out for aphids, caterpillars, slugs and snails.
You can harvest your artichokes any time after the flower buds form until they start to open. Artichoke flavor is not dependent on maturity the way it is with a tomato. Slice the buds off at the base using a sharp knife.