Hey, I didn't say a word about your papyrus, tomato, cattail, and cannas. In fact, I suggested you plant cannas. Only the water lettuce and water hyacinth are invasives, and are illegal to plant or propagate in Florida. If you need more information on the harm that invasive plants cause to the environment, I'd suggest you contact your County Extension service. Glad to hear you're using them to feed your rabbits but they can still seed themselves and spread to other waterways from your pond via birds and wild animals.
Btw. lotus is also edible and very beautiful. I had water chestnuts growing last year, but somebody (raccoons probably) found them really delicious and ate them all up.
