Julgans Nigra
,
Deciduous
Black walnut is by far the hardiest and adaptable nut tree that
can be grown in Nebraska. The species is native to much of the central and eastern US and occurs naturally in river-edge woodlands
of eastern Nebraska and follows the Niobrara River as far west as western Cherry County.
Where To Grow
The tree seems indifferent to climate and soil conditions and once
established, can live for many decades with very little care. However, native trees are found in well-drained bottomland and
with rich soils. It will tolerate dry, poor soils but the cost is slower growth. The roots of walnut produce an allelopathic
chemical called juglone which can inhibit the growth of other plants growing near it. For this reason, vegetable gardens should
not be planted near black walnuts.
Size at Maturity
Tree Height
Tree Spread
40-60'
35-50'
Additional Considerations
Black walnut has few insect or disease enemies with the exception of fall webworm and walnut caterpillar. Both of these insects can be
controlled and are more of a nuisance than a threat.
Interesting Facts
Walnut wood has long been one of the most valuable hardwoods. In the late seventies, a large black walnut tree in northwestern Ohio
fetched the tidy sum of $35,000.00. Yep, that’s 35 grand for just one tree.
Additional Images
