On my way home there's a walnut tree growing by the street. Should I have any concern about eating the nuts? They are reaching the point where the rinds are splitting and the shells look clean and healthy which I believe means they are ready. I think it's fine to just eat them, but was just wondering if there are any issues. The tree is outside the back fence of a closed business.
I should know the answer to this question since I grew up with walnut and almond trees in the backyard, along with a Noah's Ark of fruit trees.