A perfect plant for containers, Bishop's Weed (Aegopodium podagraria) can spread wildly in the garden, smothering other plants and becoming nearly impossible to control. Also called Gout Weed for its use in the past in treating gout, the plant grows about 12 inches high in almost any soil and prefers partial shade but will grow in full sun if kept moist. It's an excellent groundcover for steep slopes, around trees, and wherever it can spread without creating problems. This variegated variety, A. podagraria 'Variegata', is much more popular than the solid green plant.