How do water-lily leaves float?
White water-lily is a freshwater plant rooted in bottom mud, sending leaves to the surface on long stalks.
Structure, development and life cycle
Large air spaces in leaves and stalks aid buoyancy and oxygen movement. Stomata are concentrated on the upper surface away from water, and a waxy coating sheds droplets. Flexible stalks follow changes in water level. A bottom rhizome stores resources and produces leaves and flowers.
Growing, uses and cautions
Still or slow water with enough light is suitable, while excessive depth can prevent young leaves reaching the surface. Pond spread should be managed and decaying leaves removed before degrading water quality. Removing plants from wild waters may harm habitat and violate local rules. Garden lilies must not be confused with toxic or invasive aquatic plants without reliable identification.