Begin feeding your pond fish with a high protein food when temperatures rise above 70 degrees.
Fertilize water lilies and lotus once a month to encourage continuous bloom.
Hardy water lilies bloom only during the day, but annual tropical varieties include day and night bloomers. Plant both to enjoy the bloom during the day and in the evening. Night blooming tropical water lilies open their flowers at approximately 5 pm and close the following morning around 9 am.