As Penn State puts it: “Mulch Volcanoes are Erupting Everywhere“, and they are killing trees. It is a slow death, but one that is almost inevitable. Gardeners and landscape professionals see over mulched trees everywhere and they copy the method, not knowing that they are mulching incorrectly.
The main cause of death has been attributed to increased trunk rot, but that is a myth. This post will debunk this myth, explain the real cause of death, show you how to mulch trees and shrubs properly and how to fix the problems caused by mulch volcanoes.