- entire rhizome edible.
- underwater tuber can be disloged from main roots with toes, floats to top.
- tubers are edible raw.
- raw unwashed tubers can be stored for several months.
- tubers can be cooked, sliced, dried for storage, and later boiled.
- tubers are usually several feet from parent plant.
- stems can be cooked.
- varieties in the Pacific Northwest include Arum-leaved arrowhead (Sagittaria cuneata) and Wapato (Sagittaria latifolia).
- grows in calm water in plains, foothills, and montane regions.
- warning: some species can cause skin reactions.