I've woodworker for over 30 years and full time for the last 3. I've
have bought my share of commercial walnut over those years
I have been a wood turner for the past 2 years. It that time I have
purchased walnut from the local loggers and sawyers in the area (
Eastern Ontario Canada) My " Trees of Canada" by Farrar book puts
Walnut as growing mainly is southern Ontario 400km from where I am.
The walnut I get locally is beautiful. In a turning I get get shades of
brown, pink and even a green.
My logs have come from different woodlots and different sizes.
I have never seen such a range of colors in the commercial lumber.
My question; is the commercial process of kiln drying or even steaming
the cause. Could it be just a regional difference in soils, weather,
and seasons. I know the commercial lumber is brought up from the U.S.
And yes I am positive it is Black Walnut

Black Walnut is native to Indiana. I have a piece of walnut cut from a tree for
the old water powered sawmill at Cutler, Indiana, over 100 years ago, airdried,
or course. I also have a piece of Black Walnut cut from a tree about 5 years ago
from a woods about 5 miles from Cutler, solar dried. Both have different color,
texture, and grain. Go figure. (no pun intended!)

Dan