Exemplary embodiments of the present invention are directed to a support device for a decorative tree, for example a natural Christmas tree. The support device includes an arcuate member and a cylindrical portion extending substantially perpendicular to the arcuate member. The arcuate member includes at least one elongated gripping tooth positioned on a concave surface of the arcuate member opposite the surface of the arcuate member from which the cylindrical portion extends from. The support device is configured and dimensioned for use with conventional tree stands in order to produce a substantial clamping action around the trunk of the decorative tree in order to hold the decorative tree in a substantially upright position.