posted 13 years ago
I don't know how to grow water chestnuts, but I have heard that they are an envasive species here in Florida. So, if you think about the things that are readily available in the waterways of my state, then you'll have alot of what you need.
(I am probably crazy, but in my book an envasive food item is to me one I need to expend zero effort to grow, and some amount of pre-planning to keep it contained. In this case I might just try filling a kiddie pool with sand, and then flooding said kiddie pool.)