With the lower temperatures during the fall season, you will notice a decrease in water lily blooms and the lily pads turning yellow as the water temperatures cool. It is important at this time to remove the dead leaves and spent blooms to avoid having the debris in the pond over winter. As winter approaches and water temperatures drop, the water lily will go dormant. Remove all dead lily pads and lower the potted lily to the deepest part of the pond or to a water depth of about two feet.

Hardy Water Lilies,Pink Grapefruit at Dragonfly Aquatics.