Now that the leaves are off the trees, one can really see a tree in its entirety. What I have started to notice is lots of trees with mulch piled up against the base of trees.
Now mulch can be a good thing. Mulch is simply a layer placed on the surface of the soil around landscape plants. A two to four inch layer of organic mulch, pine needles, woodchips, or bark will decompose and actually improve the soil over time.