Water Lettuce | Pistia stratiotesSoft, emerald green foliage that resembles little lettuces or roses floating on the water No planting necessary simply place it on the surface of the water Fine feathery roots under the water provide the perfect cover for small fish Needs a sheltered position in sun or dappled shade Tiny white flowers grow in the leaf axils A free floating aquatic perennial which is easy to grow and has no known pests or diseases