Over the years, the neighborhood squirrels have planted a number of walnuts in my yard they gathered from across the street. Initially, I thought it was great they'd plant a food producing tree for me. :lol: Problem is though, they planted some of them at the base of other fruit trees and I have let the walnut trees grow big enough that they can't simply be pulled up by the roots. I'd just dig the walnut trees up and transplant them but, being so close to the other trees, I'm afraid I'd loose both trees...or at least damage the trees I most care about. So, I'm wondering if I could kill these walnut trees by removing a circular strip of bark around the circumference of their base then, after they die, cut them down with a saw?