Water Gardens, Aquascaping, Lake Restoration, and Aquatic Weeds
Most of the plants sold for water gardens and aquascaping, are not native to North Carolina or the United States. The great majority of these plants never become problems. However, a few have proven to be highly invasive (e.g., waterhyacinth and purple loosestrife) and have caused significant environmental damage through habitat destruction.
The link address is: http://www.weedscience.ncsu.edu/aquaticweeds/comturf/turf.htm