A traditional edible wetland plant of North America. Goes by many common names: Broadleaf Arrowhead, Katniss, and Wapato. Plants For a Future (PFAF) lists it as a choice edible:
Root - raw or cooked. Excellent when roasted, the texture is somewhat like potatoes with a taste like sweet chestnuts. The tubers can be eaten raw but they are rather bitter (especially the skin). It is best to remove this skin after the tubers have been cooked. The tubers can also be dried and ground into a powder, this powder can be used as a gruel or mixed with cereal flours and used to make bread. The N. American Indians would slice the boiled roots into thin sections and then string them on ropes to dry in much the same way as apples. The egg-shaped tubers are 4 - 5cm long and are borne on the ends of slender roots, often 30cm deep in the soil and some distance from the parent plant. The tubers are best harvested in the late summer as the leaves die down. They cannot be harvested by pulling out the plant since the tops break off easily, leaving the tubers in the ground.
A wetland plant, the homesteader or farmer will need a very damp field, pond, or water tubs, to grow Duck Potato. Ornamentally it has pleasing foliage and a compact white flower.
3'h. Very wet Soil. Full-Part Sun. White bloom July-Sept.
These seeds were produced by our friends at Ernst Conservation Seeds in Meadville, PA.
Growing Tips: Double dormancy. Surface sow in Fall in wet conditions. Seed will germinate in 2 springs.