A favourite for the water garden, Lobelia cardinalis has striking deep red foliage and masses of scarlet flowers held on tall stems to 90cm in height. A very eye-catching plant to contrast with the greens of other marginals. Can be planted in the pond up to 15 cm deep or grown in moist conditions at the ponside. Also very popular as a garden plant, the showy foliage and brilliant flowers enhance any border or container. Trim decaying foliage in autumn.