I used to think that American black walnut was scarce untill I planted one, followed by 5 more when I moved to our farm in upstate NY. They started producing nuts after about 10 years and our local squirrel population did their jobs, and now we have over 300 scattered over two farms and I find more every year. They are fast growing and very weak when young and if in the open, need judicious pruning or they will turn into more of a bush than a tree. I walk the farms in January with my battery operated pole saw and prune. The first one I planted (almost 40 years ago) is 18" in diameter and over 60' high.
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