We overwinter all the Tropical water plants in our porch GH.
Since we raise FAR more plants than our pond will hold we usually do 25 or more water containers and gardens.
So come late fall we drain them all and put 7 or 8 large ones in the GH.
Fill. add mosquito dunks, plop the plants in and they are good to go for the winter.
Our water canna are about 3' tall now, rushes and papyrus 4 or 5' tall.
Come the last frost out they go.
They only issue is finding enough room for them....LOL!
