Andy Dingley wrote in
:

snip
Now every reference to US walnut timber that I've seen describes it as
back walnut. Maybe a grafted J. regia is grown for the nuts, but AFAIK
the timber is coming from J. nigra instead. I don't know if these are
nut trees, separate stands of trees, or where the nut wood goes to.


The 'nut wood', for the most part, is of insufficient size for woodworking
purposes. The growers aren't looking for large trunks, or great height
from their trees - just the nuts, and consistent access to the producing
stock.

All of the 'english walnut' I've seen in smallish branch wood, here in
California. My experience is not exhaustive, however. Much older orchards
may have used different methods.

Patriarch