This plant has one of the worlds smallest flower. Very easy to grow. All it needs is full sunlight and it will double in volume in 48 hours.
Duckweed oxygenates the water, cleans the water by absorbing ammonia and nitrates, provides food for some fish, provides shade in outdoor ponds, and its roots provide spawning sites for some fish and hiding places for baby fish and for fish food items such as insect larvae and small crustaceans.
Duckweed can also reduce algae growth, by shading the water and by out-competing algae for plant nutrients.