Just so you know here is a clip from the Alabama state pond book.

Aquatic plants from water gardens or ornamental ponds should never be placed in a fish pond. Many of these plants are not native to Alabama and can have serious environmental impacts on ponds or adjacent natural waters. Most are illegal to place in the public waters of
Alabama.

http://www.outdooralabama.com/fishing/freshwater/where/ponds/pondbook.pdf