Water Gardening: Hardy Water Lilies Question, 1 by BonnieIN

BonnieIN wrote:
Debbie your waterlilies will be much happier growing in your pond instead of a pot so you should try to place them so they will always be submerged in the water.
If you went 4' they might take alittle longer to reach the surface in the spring but say by June if your pond depth is down 1' or so, no biggie. That is if your pond depth lowers that early, otherwise you can try 3 1/2 feet or so.
Alot of hardy waterlilies will grow just fine at 3' and even 4' unless they are a miniature variety which normally thrives in shallower water.

Experiment.. just be sure that they don't dry out and if you have to move them to a deeper depth it will just set them back temporarily.

Good luck!