| Old Text: | May act as food for various herbivorous fish, such as koi or goldfish. A serious pest in the northern part of North America.
| New Text: | May act as food for various herbivorous fish, such as koi or goldfish. A serious pest in the northern part of North America. Illegal in some states and countries, for it clogs waterways as past hobbyists spread this plant by tossing it in waterways and canals. Serious care and precautions must be taken to prevent its spread. When discarding it, completely dry it to the point where seeds are too dry to grow. Then properly discard. Do not flush, as it will spread in the sewage systems. |