A Robust Aquatic Plant Which Puts Up Dramatic Heart-shaped Leaves On Tall Stalks Giving Ponds A Tropical Feel. Bottle-brush Blue-violet Flowers Appear In Summer & Autumn Attracting An Array Of Insects.grow Young Plants Of Pontederia Cordata In Spring In Boggy Conditions By The Pond, Preferably In Full Sun. Tropical-looking Heart-shaped Leaves Unfurl Followed By Tall Stems Of violet Flowers In Summer & Autumn.the Leaves Quickly Establish Providing Excellent Shelter For Aquatic Wildlife Like Frogs & Toads & The Pretty Flower Stems Act As A Magnet To Passing Bees.what’s More It’s Fully Hardy, So Will Come Back Each Year Stronger & More-established.flowers July-septemberheight 90cmplanting Depth 10-20cm