The present concept is a stump auger used for cutting and destroying a tree stumps, the stump auger includes a main shaft connected at a top end to a drive mechanism for turning the shaft about a vertical axis, wherein the main shaft is connected at a bottom end to a cone top such that the cone is part of the main shaft. The stump auger cone includes a spiral thread extending about the outer surface of the cone from the cone top to the cone bottom. The stump auger further includes at least two boring bars connected to the main shaft, each boring bar includes at least two third blades which include a blade edge on a front face for shaving, cutting and chipping the tree stump as the stump auger is rotated about the vertical axis and penetrates the tree stump. Each third blade includes a planar bottom surface spaced from a planar top surface, an inner face spaced from an outer face, the front face spaced from a back face, and wherein the outer face of the first third blade abuts at least partially with the inner face of the second third blade such that the bottom surface of the first third blade lies along a first plane A and the bottom surface of the second third blade lies along a second plane B such that plane B is a distance D vertically higher along the vertical z-axis, and wherein successive third blades lie along successive planes each higher along the vertical z-axis. The outer face and inner face of each third blade are rigidly connected together.
