I had several 5' tall, potted Oak Leaf Hollies planted last fall. I believe trees should be planted with the top of roots/root flare just above ground level, but these were planted even with ground level. One of the trees has settled almost an inch deeper into the ground. I am thinking about digging out the tree, tamping dirt in the hole and replanting. Since the tree looks great, I might be doing more harm by replanting. As a compromise, I thought I could use my hands and a hose to pull away dirt away from the high grade side of the trunk. If the tree is doing fine after almost a year, should I just let it be? Thanks for any guidance.