I have found that the yellow (Flag variety) iris are very agressive growers on ponds or garden situations. We have kept them away from the water and instead planted Louisiana Iris varieties spotted around our three acre pond in half a dozen different colors. They do spread, but are controlable and beautiful. The Louisiana Iris have been found to do well far from their native soil of Plaqumines Parish and the Pearl River Delta.

By-the-by, I pulled an eight pound large mouth out of the twenty year old pond yesterday. I put her back in, of course.