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 2025 | |
| Charlois | Found by Bastiaan Roduin in the Charlois district of Rotterdam Large nuts, annually bearing and probably self-fertile. | Now | |
| Emma K. | Bears medium to large, thin shelled nuts of excellent flavour; and is heavy and early cropping |  | Now |
| Neel 1 | A very good oval nut with a unique shape. Good anthracnose tolerance, good production, excellent growth with a distinctive central leader and spreading branches. The flavor of this nut is comparable to and maybe slightly better than Thomas | Now | |
| Stabler | Produces some to all nuts with a single lobe. Reported very good flavor and quality if under excellent care but maybe susceptible to anthracnose? | November 2025 | |
| Thomas | Very large nut cracks out easily, thin shell. Bears early, annually, and heavily. Late vegetating. Anthracnose resistant. | None | |
| Weschke | Carl Weschcke introduced this hardy selection from Minnesota. The tree is a modest grower and ripens the nuts in mid-September here. The nuts crack out with large kernel pieces. Suited for climate zones 5b-8. | Now |