Bob Henrick wrote:Thomas, I am not sure that I understand just what the problem is that you have with black walnuts.
Bob, I think I can explain this. I just got out my trusty Sunset Western Garden book and found out there are several kinds of black walnuts. The northern California version (there is also another from SoCal) is Juglans californica hindsii. That's the black walnut I described before, the one that's used as rootstock for the English walnut (Juglans regia) where those are grown in California. The black walnut native to eastern North America (and one with which I assume you're familiar) is Juglans nigra. I've never encountered one of those but from your description, it is a great deal easier to open than the California version. Take my and Thomas's word for it, the fruit of the California black walnut is practically inpenetrable. It would never be found in stores.
By the way, this is an illustration of why they told me in my Master Gardener's class never to use common names for plants. The same common names get used over and over again for different species.