Hi, I just moved to Northwest Colorado and have a small pond that some ducks are using and would like to plant stuff, preferably perrenials, in or around the pond to keep them there. I have read that duckweed, pondweed, smartweed, chufa,jap millet etc. are good but I don't know if they will grow well in this part of Colorado and I am having a difficult time finding a place that sells them. If anyone has suggestions they would be greatly appreciated, thanks!