| The nut produced by the black
walnut tree (Juglans nigra), known as the eastern black walnut
became the state tree nut on July 9, 1990. The nut has a variety
of uses. The meat is used in ice cream, baked goods and candies.
The shell provides the soft grit abrasive used in metal cleaning
and polishing and oil well drilling, and is also used in paint
products and as a filler in dynamite.