How long and when does a water lily bloom?
A water lily blooms in USDA Zone 6 (temperate USA) from May through early September. Depending upon the variety, the flowers open early to late morning and close mid to late afternoon. Each flower lasts four days before settling under the water to rot. The spent flowers should be removed when the flower fails to open after blooming. If properly fertilized and deadheaded the water lily should produce a continual supply of one to six (or more) flowers each day.
