I bought some water fringe(Nymphoides peltata ) 2 years ago.Last year it did very well and has the bonus of small flowers.It is a bit lily like in appearance but the leaves are much smaller.The plant starts growing early on in the season and rapidly covers the surface of the pond,so although it is similar to a small water lily it does not have to be potted up the same way as a lily and does not have the usual crown that needs to be out of the soil.It can be planted at a depth between 1 and 2 ft.
Already this year it is growing rapidly and looking very healthy,so i am very glad i bought it.
www.watergardeningdirect.com and go to the deep water marginals in the pond plants section,under the shopping section.
