Experts from the University of Minnesota Extension Service warn against the common landscaping practice of creating 'mulch volcanoes,' where mulch is piled against the trunks of trees. This practice traps moisture, creating an environment that promotes decay and pest infestations. To ensure tree health, it is crucial to maintain at least a 6-inch gap around the trunk, allowing for necessary ventilation and dryness. While mulch is beneficial for soil health, improving temperature regulation and moisture retention, it should be applied correctly to avoid harming the tree. Homeowners are advised to regularly check their gardens to ensure that mulch does not migrate and cover the trunk. A well-maintained mulch bed should protect the soil without suffocating the tree, emphasizing simplicity over aesthetics for the longevity of the plant.