Plant once, harvest for years these hardy vegetables return each season, saving effort while keeping your garden productive and full of life. Asparagus Zones 310, spring spears that keep producing for decades. Rhubarb Zones 38, tangy red stalks for pies and preserves. Artichokes Zones 711, striking plants with edible flower buds. Sunchokes Jerusalem Artichokes Zones 39, tall sunflower relatives with nutty roots. Perpetual Spinach Zones 510, cut-and-come-again greens all season long. Chives Zones 39, mild onion flavor with purple blooms for pollinators. Sorrel Zones 49, lemony leaves for salads and soups. Horseradish Zones 39, spicy roots that spread easily once established. Watercress Zones 59, peppery greens thriving in moist soil or shallow water. Tip: Choose a sunny, well-drained spot most perennial veggies return stronger each year when divided every few seasons.