For quite a few years, we've had a dogwood tree growing just at the near end of our driveway. Like much of our landscaping, it just appeared one year and we let nature take its course.
In 2019, we had landscapers work on the non-lawn portions of our yard, which we regretted. Areas where they spread black mulch looked fine at first, but as the summer went along, the grass died alongside the mulched areas, as though the mulch had contained Roundup or some other powerful herbicide.
A cherry tree declined to the point where only two limbs remained alive. Next to the shed, a magnolia tree got sick and died. The area containing the volunteer dogwood also suffered, but the tree remained alive, although several branches stopped producing leaves and were pruned last year. This spring, it's looking better than it has since before the misbegotten mulching.