Another juglans native to N. America, as with most walnuts grafted trees are critical for large crackable nuts. Black walnut shells are very hard, these cultivars a bit more crackable and nuts more readily extractable.
A sunny site with deep well drained soil will produce a fast growing tall tree. They can be self-fertile but best to plant two or more.
Images of nuts on blocks courtesy of Arie Bruin of De Acht Plagen
| Variety | Description | Availability | |
|---|---|---|---|
| Bicentenial | Seedling of 'Thomas' with some of its characteristics. The original tree grows in Potsdam, NY. It is hardy, vigorous and productive. The nut is large and good cracking. | November 2023 | |
| Emma K. | Bears medium to large, thin shelled nuts of excellent flavour; and is heavy and early cropping |  | November 2023 |
| Laciniata | Reckoned to be the best cut leaf form of a walnut, very rare ornamental tree, not for nuts. | November 2023 | |
| Thomas | Very large nut cracks out easily, thin shell. Bears early, annually, and heavily. Late vegetating. Anthracnose resistant. | November 2023 |