Water Lettuce, known scientifically as Pistia stratiotes, forms floating rosettes of soft, velvety leaves that resemble an open head of lettuce. The plant drifts on the surface using spongy internal tissue for buoyancy, while long, feathery roots hang beneath, creating underwater shelter for fish and invertebrates. Thought to be of tropical origin, Pistia stratiotes now occupies lakes, ponds, slow rivers, and nutrient-rich wetlands across the world.
Its rosettes can multiply quickly through vegetative offsets, forming broad mats that shade the water below. A key trait of Pistia stratiotes is its ability to thrive in warm, calm waters, where dense colonies can drastically impact oxygen levels and access to light. Though visually appealing and historically used in ornamental ponds, it has become invasive in many regions. Its floating architecture makes Pistia stratiotes a unique and influential species in freshwater habitats.
Water Lettuce has a typical height above water between 3”-8” (8-20 cm), a spread diameter of 24”-48” (61-122 cm), and an underwater root length between 12”-20” (30-51 cm).
Water Lettuce, known scientifically as Pistia stratiotes, forms floating rosettes of soft, velvety leaves that resemble an open head of lettuce. The plant drifts on the surface using spongy internal tissue for buoyancy, while long, feathery roots hang beneath, creating underwater shelter for fish and invertebrates. Thought to be of tropical origin, Pistia stratiotes now occupies lakes, ponds, slow rivers, and nutrient-rich wetlands across the world.
Its rosettes can multiply quickly through vegetative offsets, forming broad mats that shade the water below. A key trait of Pistia stratiotes is its ability to thrive in warm, calm waters, where dense colonies can drastically impact oxygen levels and access to light. Though visually appealing and historically used in ornamental ponds, it has become invasive in many regions. Its floating architecture makes Pistia stratiotes a unique and influential species in freshwater habitats.
Water Lettuce has a typical height above water between 3”-8” (8-20 cm), a spread diameter of 24”-48” (61-122 cm), and an underwater root length between 12”-20” (30-51 cm).