Hi denverponder,
What kind of lily did you buy? A regular lily is probably too big for your little pond. Did it make many blossoms last year? Did you fertilize it? It isn't doing anything yet?
Can you take it out of the pond and dump it out and see what's going on with it? Lilies are pretty fast growers and it may have strangled itself in that little pot.
Its always good to repot plants, since they usually only come in enough soil to keep them alive until they get sold.
Lilies don't like too much water movement either.
You should consider maybe a smaller type of water lily.
Just try to use the biggest pot you can, that would fit in your pond. And be sure to fertilize all summer long.

I'm not sure what kind of lily it it, but it did have a couple of blossoms mid/late summer - without fertilizer.

I pulled it out while cleaning a month ago. It did look like there were some grass-like sprouts growing from the pot a month ago, but I put it back and nothing resembling lily pads have reached the surface - then again, it has been a cold spring in Colorado.

I'll take another look and pop it out of the pot. If it is too big, what type of water lily should I be looking for.

If you left it in the 90 gallon preform during the winter it might have froze. A preform of that size would freeze solid here. I've had lilies freeze before and sometimes a part of the tuber lives and part freezes and rots. The rotting part eventually kills the living part.
If it had what appeared to be tiny green sprouts on it when you looked at it recently it should probably still be alive. Most of my lilies have pads up at the water surface now but a few are still slow to get going.
Your lily may need some fertilizer and to be repotted. You should pull it up and check it closely to make sure it is healthy and possibly repot it.

Hi again,
I don't know the names of smaller waterlilies, but go to just about any online watergardening store, and they usually say what size the lilies are.
I'm wondering if what is growing out of your lily is just weeds? Feel it, and if it feels squishy, then its a gonner.
I assumed you had your pump running all winter? If you keep your new one in the same preform (I'm assuming its in the ground and not above ground, right?), you could keep a bird bath heater in there and it would probably keep it alive through the winter.
If its just too cold, pull it up and bury it in the ground next to your house. I've done that with lilies and lotuses, and they do fine (covered with about a foot of leaves).
All my lilies have several leaves now too, so I'm thinking your's is a gonner. Good luck with your next one.

some mini lillies that you may want to consider:

PerryÂs Baby Red
Aurora
Indiana

Here is a movie about how to repot lillies (disclaimer: i didn't actually watch it).

Here is a link that might be useful: how to repot lillies

here is another how to page:

Here is a link that might be useful: how to repot lillies too.

Helvola is easiest to find miniature waterlily. It has yellow blooms about the size of a quarter. Spreads about eighteen inches.

Perry's Baby Red is about five times that size, in my pond it spreads three feet by four and that is only because that is how big the pond is.