Black Walnut (Juglans Nigra)
It is hardy to zone 4. It is in flower from May to June, and the nuts ripen in October. The flowers are pollinated by Wind. The plant is self-fertile.
The kernels have a sweet, rich distinctive delicious flavour it makes an excellent dessert nut and is also widely used in confections, cakes etc. Shelling is a problem as they have very hard shells.
The Black walnut is one of most valuable natural forest trees in the United States. A very ornamental and fast growing plant, it is sometimes cultivated in N. America for its edible nuts.