I put a small clump (for lack of better term) of Water Hyacinth in my smaller pond a couple weeks ago, which is quickly growing into a big clump. Is there anything in particular that encourages them to bloom? I actually purchased them to put in the larger pond, but I then read they need more sun, so I moved them. The larger pond only gets a small amount of sun early in the am (on the east side of house, under a huge Tulip tree). The small pond in front gets sun about half the day (faces south, but still partially under a huge Sycamore tree). They seem to be multiplying well there. Do you think they would survive okay in the shaded pond, if I divided the clump? Even if they didn't bloom there, they would provide the needed cover. I reside in zone 5, so they obviously would not survive winter here. Could I winter them in the 300 gallon container I'm going to winter my fish in (inside, of course)?