Where I live black walnut trees are everywhere. It would be a significant project and investment to remove all of them, and some of them are of significant size and offer significant shade. Some of them aren’t even fully on my property, but particularly overhang my pasture area.
I recently had a conversation with somebody who was shocked that I hadn’t removed every single black walnut in and around my pasture. They were concerned that my horse’s were at risk of laminitis just by being around the trees.
I was always under the impression that it was the shavings or wood dust that was the culprit, and not just standing under the tree for shade that would make a horse sick…