Water Hyacinth Question

[thepitclub]

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)?
 

[JoshS]

They will grow fine in the shade, but they may not bloom.

They are very difficult to keep alive indoors.  They need lots of bright light and warmth.  It is usually cheaper and easier to replace them every spring.

[SheilaJ]

I've had trouble overwintering indoors, even in decent light. They tend to get covered in spider mites really fast. Cheaper and easier and safer to buy new in the spring; they multiply so fast you don't need to buy many!