A method and device for supporting a sheet of material is provided optionally for plant support and/or protection. A fencing device includes a rigid post and two or more flexible arms. A shading material, or a protective barrier material, such as a wire mesh, a plastic netting or a deer netting material, or a solar energy collection panel may be attached to distal ends of the flexible arms and may extend for seven feet or more from a ground plane to a top height of flexible arms above the ground plane. Flags may extend vertically above the barrier material to further discourage intrusion by animals. Horizontal lines may be extended from a plurality of fencing posts to even further discourage intrusion by animals and/or to support the barrier material. A trellising device may be coupled with and above another trellising device to provide layers of shading and plant support.