Originally posted by gaweidert Yes these are the native black walnuts. The hull is green but starts to turns black after the nut falls from the tree. This "black" in the hulls is used to dye wool a nice deep shade of brown. The outer hull is soft and easily removed revealing the hard cased nut inside. This is then cracked open to get at the fruit inside. You get a whole new appreciation for how strong the jaws of a squirrel are when you watch them peel and crack a walnut. When you buy walnuts in the store, the outer hulls are already removed. You have to be careful in handling the hulls as they will permanently stain just about everything they touch.
My father in law had an English walnut tree in his yard. He never got any nuts off it either as the squirrels were very efficient in stripping it clean. It was destroyed in an ice storm in 1991.
a couple of friends and relatives trapped through the winter
they would set their traps and chains in a soup of boiled walnut coverings
the steel would turn a very dark brown and the new smell would be dissipated
after the shells were cracked and the meats extracted the shells were used as a polishing medium in their rock and brass tumblers
substituted for pecans the nuts make very good sandies (cookies)
adding them to ice cream makes them quite usable
as a nut too just munch...not my favorite
as a dyestuff, you're right, great color and it is tenacious
as an aside I've used Earl Grey tea to dye wool roving for fly dubbing...it provides a rich reddish brown that I can't find in the shops
plain old lipton's will give you almost perfect "british tan"...I've used it for cotton hats and shirts that were just not the right color