Black Walnut (Juglans nigra) A rapidly growing tree common in all of Ohio, is most common in moist bottomlands and open fields, but is found everywhere due to squirrels burying its nuts. It has dark green compound leaves and produces delicious nuts that are preferred by wildlife. It is valued for timber, veneer, and furniture. Grows well in most locations, but prefers fertile, deep soils. Mature height and spread is 70 ft. Prefers full to part sun.