5 Cups of freshly Grown Duckweed Shipped Priority Mail USPO Excellent supplemental food source for aquatic turtles and other vegetation eaters. Duckweed floats on the water surface with a small root structure attached. They can provide shade to reduce algae growth. They also provide protection from bird and other predators. They can survive in full sun or full shade. They do best in slow moving or still water. Duckweed may contain beneficial snails and other pond and lake dwellers. Duckweed can enhance the beauty and variety of any pond or aquarium. Water Spangles (Salvinia minima) Reproduce rapidly by self cloning providing a steady food source for your aquatic animals. Expect some die off and darkening during shipment causing a odor when package is opened. However if introduced to your pond or tank rapid reproduction will begin. Because of this reproduction this may very well be the only floating plant you will ever need to purchase. (Save Money) We ship this on Monday or Tuesday only to avoid weekend Post Office slow downs. We ship Priority Mail only. We harvest fresh immediately before shipping. We do not offer refunds for this item caused by USPO delays in shipping. Priority Mail is insured but it is the buyers responsibility to file a claim with the Post office. Free Shipping to all US States And Territories Free Shipping To All US States And Territories