In a pond, I wouldn't think you'd need pumps. Might be a PITA to weed a floating island, but anything can be done with enough will and imagination on how to make it happen!
You could only grow plants that tolerate constantly saturated soils, or can live with roots in water only. Personally, I don't know what veggies would work.
Last edited by Rainman; 04/14/15 11:31 PM.
