A thing which I regret, and which I will try to remedy some time, is that I have never in my life planted a walnut. Nobody does plant them nowadays—when you see a walnut it is almost invariably an old tree. If you plant a walnut you are planting it for your grandchildren, and who cares a damn for his grandchildren?
The biggest producer of walnuts by far is China (more than 1.7 million tons), followed by USA, Iran, Turkey and Mexico. Ukraine, Chile, Uzbekistan, France and Romania complete the top 10.
Walnuts are globally produced in more than 50 countries.