I bought some from nice people on Gardenweb.com and Koiphen.com
Then I let them reproduce and then traded for other plants I didn't have. I also went to Wal-Mart and bought little boxes with rhizomes of Waterlilies ready to plant. They grew in real nicely! You should check your local Greenhouse, they can usually order them for you if they don't have them in stock. If you'd like, Email me and I'll send you a mixed box for the price of shipping. Thanks, Kenny