Welcome to the forum! There's really only 2 varities that are local to your area, spatterdock (Yellow) and the Fragrant Water Lily (white).

Both are considered invasive. You can plant the tubers in roughly 3' water depth and they'll spread to their preferred depths.

But, with hardy lilies, you won't have the manual removal problems that will be required 5-10 years down the road. The wild invasive lilies are cheaper in the short term, (you can transfer wild plants) but be VERY careful on how you clean them before putting them in your pond. If you figure in the removal costs long term, (either manual or chemical) the hardy lilies are cheaper. I wouldn't take any from a BOW that has any other plants (Eurasian Water Milfoil, etc.) that you don't want in your ponds. My feeling is that no matter how well you clean them, there's the risk of bringing some of the unwanted plants to your pond.

If you want to go the Hardy route, I can send you a PM (Personal Message) on at least one supplier that is reasonably priced.


www.hoosierpondpros.com

[Linked Image from lh6.ggpht.com]
http://www.pondboss.com/subscribe.asp?c=4
3/4 to 1 1/4 ac pond LMB, SMB, PS, BG, RES, CC, YP, Bardello BG, (RBT & Blue Tilapia - seasonal).