Good King Henry, Wild Spinach good-king-henry Good King Henry is a traditional perennial leafy vegetable once commonly grown in Europe. It produces edible leaves, shoots, and flower buds, often compared to spinach or asparagus. Growing conditions LightFull sun to partial shade. Soil typeWell-drained loam or clay soil rich in organic matter. Water requirementMedium; prefers evenly moist soil but tolerates short dry periods. Nutrient requirementMedium; thrives in moderately fertile soil. Back to plant list