How to Winterize Water Lilies

Begin getting your hardy water lilies ready for winter by removing all dead and dying foliage. If the pond freezes solid in your climate or is drained for the winter, remove the lily, pot and all. Store the entire pot by keeping it cool and moist in a plastic bag. If you can't store the whole pot, remove and clean the growing tuber and store it in peat moss at 40 to 50 degrees F.

If the pond doesn't freeze solid, don't remove the pot. Simply lower it to the deepest part of the pond, where water will not freeze. In spring, bring the pot back to the proper growing level in the pond. If you've dug up and stored the tuber, repot as if it were a new plant.