After some recent grading on our property half a dozen small aspen trees ended up with about 2 to 3 feet of earth piled around their trunks. I've read that this could be bad for some trees but cannot find anything definitive with regard to the impact on aspens. Should I unearth my aspen trees? Thanks for any insight.
Lincoln County Wyoming
Absolutely remove the soil from around the tree trunks! The soil is providing a perfect environment for trunk-rotting organisms to invade and it also prevents oxygen from reaching the trees' roots. Roots require oxygen (photosynthesis requires carbon dioxide). Aspens have thin bark to begin with and are also susceptible to a wide variety of insect and disease problems, some of which attack trunks.