An attachment apparatus is provided for supporting a flower holder module on a cylindrical support and includes a module holder portion. A transverse bridge member includes a proximal end which is connected to a bottom portion of the module holder portion. A strap support member is connected to a distal end of the bridge member. The strap support member includes a first strap reception channel. A first flexible strap is threaded through the first strap reception channel. A first fastener assembly is connected to the first flexible strap. The strap support member further includes a second strap reception channel located above the first strap reception channel. A second flexible strap is threaded through the second strap reception channel, and a second fastener assembly is connected to the second flexible strap. Each of the first fastener assembly and the second fastener assembly includes an inside hook-or-loop material located on an inside surface of the respective flexible strap and includes a complimentary loop-or-hook material on an outside surface of the respective flexible strap. In addition, each of the first flexible strap and the second flexible strap can include a quantity of relatively high friction rubber material on a respective inside strap surface. Each of the first flexible strap and the second flexible strap is wrapped around the cylindrical support, and the hook-or-loop material is attached to the complimentary loop-or-hook material to secure the attachment apparatus to the cylindrical support.