Very large open somewhat vase-shaped fast-growing tree with those edible nuts you buy in the store. Traditionally used in Europe for salad oil. Has the same alternate pinnately compound foliage as black walnut but glossy blue-green leaves are larger and more rounded, almost tropical looking, and shells are a bit easier to crack.

Prefers light deep dry loamy soil. Bears in 5–7 years. Considered self-fertile but plant two for more abundant crops. In the 1930s, this strain was brought to North America from the cold Carpathian Mountains in Poland. Native from southeastern Europe east to China. Z4. (1-3' bare-root trees)