(Juglans cinerea) The butternut, also known as the white walnut, bears tender nuts with a rich, sweet, buttery flavor. One of the hardiest of all nut trees, butternuts grow 30-40 ft. at maturity and have attractive light golden wood, which is popular for paneling and furniture. This native of North America is fast growing and also makes an attractive shade or landscape tree, with its rounded form and dark green foliage. They are able to withstand extremely cold winters. While they possess both male and female flowers on the same tree, they rarely mature simultaneously. Therefore it is recommended to plant two or more for pollination purposes and larger crop size.