A support apparatus for supporting a cantilevered beam from a T-shaped post. A bracket having a cross-shaped aperture therein composed of a pair of spaced horizontal plates joined along one edge by vertical center plates is attached to an end of the cantilevered beam for sliding registry with the post. A bolt is threaded through a hole in the center plate to bear against the post, and an alternate method utilizes two bolts. The first embodiment disclosed uses a first collar portion attached to a free end of the beam and a second collar portion to form a cylindrical collar for a plant support. The second embodiment utilizes a flat plate on the cantilevered beam for supporting a mailbox or the like. A third embodiment has a pair of hooks attached to the cantilevered beam for hanging support of a sign. The fourth embodiment includes a pair of outwardly curving horizontal arms each of which has a cylindrical pin extending upwardly therefrom for registry in corresponding holes in a device to be supported such as the plant holder disclosed in U. S. Pat. No.
A plant support apparatus including first and second collar portions forms a cylindrical collar. A rectangular flange extending from an end of the cylindrical collar includes holes for connecting guidelines thereto. The flange includes a pair of arcuate slots disposed therein on opposing sides of a plane about which said cylindrical collar is split, with radially outer sides of said slots open to opposing sides of said rectangular flange. The collar portions are held together by flexible lines engaging notches of the arcuate slots.