i have water lettuce and hyacinths in my pond now and they do a great job of keeping my water nice and clear but they are starting to get boring to me as the hyacinths only bloom once and last only a few days. i was thinking about trying out some lilies and was wondering if its to late in the season and also how many would be recomended for a pond thats 11' round any advice or help is appreciated thanks in advance

