any suggestions on these plants?
what would be the minimum size surface area for this to grow nicely, without
crowding everything else?

I wanted to just drop a burlap ball of dirt etc & plant to bottom of an
outside pond..... maybe 3 feet+deep.. & let it settle in there, as the pond
is about 40'by40',,, but was told it had to be at a depth of only 18
inches,,,,,,,,,, same as lotus???

( also was told by the 'store' they only needed a 15" container....... I
would have thought al least a LARGE bushel/tub)

opinions? hints?