This is a pretty plant with dark foliage and scarlet flowers borne on tall spikes in late summer. It does well in pond edges with 10cm covering the crown in full sun to part shade. During very cold weather it would benefit from being moved to a cool greenhouse for the winter.
This plant has heart shaped leaves and produces white flowers in March-May. It will grow well in boggy ground and pond or stream margins in sun to part shade.
A striking upright growing plant with lance shaped leaves and topped by pink/purple flowers in summer. It does well in pond shallows with water over the crown grown in full sun to part shade.
This plant has heart shaped leaves and produces double yellow flowers in March-May. It will do well in boggy ground and pond or stream margins in sun or part shade.