Advice so far is sound. Non-rampant types of introduced plants will compete for food and space against the primary aquatic weed invaders/colonizers which are almost alawys very fast spreaders - rampant types. Proper plants in proper areas provide good habitat and help stabilize the shoreline and sediments. Rampant types grow and spread fast and end up becoming a nuisance quickly and then needing controlled only after a few years.
Here are several links to other discussions here about beneficial plants. Ask about any questions after reading through the topics:
http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=36543&fpart=1

http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=173681#Post173681

http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=168238#Post168238

http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=132478#Post132478

http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=183256&fpart=1

http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=151774#Post151774

http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=103604#Post103604

http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=36735#Post36735

And lastly from the Archives - Lily Pad topics:

http://www.pondboss.com/forums/ubbthreads.php?ubb=showflat&Number=110943#Post110943


Last edited by Bill Cody; 04/19/10 07:11 PM.
aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management