Over twenty years ago I planted two walnut trees. Walnut being a hard wood is a real slow grower. After all these years the one surviving tree is probably twenty feet tall.
Being the sister tree died years ago this tree doesn't have a good local pollinator near by so it has never bore any fruit. Yes, nuts are fruit.
The tree is in one of our pastures and it provides some shade for the horses. I noticed some tansy in the pasture so I went in to pull it and right near the plant was a golf ball sized green orb on the ground. I couldn't believe my eyes. It was the only nut I'd ever gotten from this tree. There was a little husk fly damage to the husk, but I got it in time. How a husk fly found this one nut is beyond me.
I took the nut inside and carefully curt off the husk. Beneath was a beautiful walnut shell that darkened as it dried. I'm going to leave it dry for a few days and then I'll see what is inside. Somehow I doubt it will be as good as I hope, but I'll give the tree credit for a good try regardless of the outcome.