Turtlemtn I think I remember reading that Black Walnuts fall into the category of needing to freeze before being able to germinate. Anyway, I planted a little over a hundred by picking them up from my main woods and stomping them into the ground around the pond area when the ground was soggy wet and 15 of them grew. today I have squirrels at the pond which is what I was after. I planted about 10 Weeping Willows by cloning from the original tree.
