last year we cut our pond plants off short and sunk them in deep part of pond ,some of them weren't happy with that . plants are [we think] a zebra rush , a spider plant [has leaves kind of like an iris but shorter and thicker] , a plant that grows about 14'' tall and has very airy ball shaped growth on top of the stems , a couple others that defy description . we are zone five , any thoughts appreciated . by the way we have an excess of pale orange colored water canna which we wouldn't mind sharing of there is any interest , if not it will be recycled . i may be to lazy to separate it but lets see what transpires . . . .peace