A container can be used for growing a plant having roots. The container can comprise a rectangular sheet having an upper edge, a lower edge, a first side edge and a second side edge. The first side edge and the second side edge are joined forming a cylinder. The upper edge is configured to rest above a ground surface such that vertical root growth is substantially uninhibited by the container above the ground surface. An inward contoured lip can be formed into the lower edge. The rectangular sheet from the upper edge to the inward contoured lip constrains lateral growth of the roots of the plant above the ground surface while vertical root growth is completely uninhibited by the container below the inward contoured lip.
