These plants live from 3 to 50 years, some even longer. They require less care, and can often use spaces that would not grow regular vegetables.  The chard, kale, onions, sorrel, and chicory can be grown just like their annual versions, but in a permanent spot. Those closer to the wild like Dandelion, Strawberry, Alexanders, and Good King Henry take more to get started. For these, I recommend fall to early spring planting, and permanent mulched beds. For more info, go here.