I have some excess water hyacinths. It's quite robust, currently at 12 in height. The water lettuce turned out to be rather anemic this go around, and of course there's duck weed. Normally I would trade for water lilies, but my pond is at capacity. I'm selling the hyacinths as they have multiplied and have filled my filter bucket. You'll end up getting some duck weed with the hyacinth.