This beautiful marginal pond plant produces clumps of attractive shapely leaves followed by elegant spikes of purple flowers in late summer attractive to bees and butterflies this rhs agm variety is also a valuable egg45laying site for dragonflies in the uk with their neat habit and tall flower stems pickerel hyacinths are ideal planted at the margins of a pond in shallow water submerged up to 12cm 4053441 pontederia cordata can also be grown in large water45filled contain