Rhubarb is an easy-to-grow perennial vegetable that produces tart and flavorful stalks for years. A garden classic, it's a favorite for baking into cobblers, pies and preserves. Rhubarb is fairly trouble-free, too. Pests and deer tend to leave it alone. Rhubarb grows best in full sun and well-drained, and gardeners plant rhubarb in flowerbeds, along a fence row or in the vegetable garden. When buying rhubarb crowns for sale online, make sure the variety is suitable for your grow zone. Rhubarb crowns can be planted in the spring or fall. Don't harvest stalks the first year. During the second year, you can take a light harvest. Take regular harvests the third year and after.