Also, water hyacinth, is a very invasive species. https://en.m.wikipedia.org/wiki/Pontederia_crassipes https://en.m.wikipedia.org/wiki/Pontederia_crassipes Ac

Also, water hyacinth, is a very invasive species. https://en.m.wikipedia.org/wiki/Pontederia_crassipes https://en.m.wikipedia.org/wiki/Pontederia_crassipes Actually the article says it is invasive in many countries.