The hoarding panel comprises: a facing 1 which is substantially upright in use; at least one plant medium container 11, trough or pot arranged for at least one climbing plant, such as ivy or vines, to grow up an outer face of the facing and a device for connecting the panel to a similar adjacent panel. The facing may be made of a mesh or grill alternatively the facing may be made from a smooth board, which may be roughened to enhance the mechanical connection by plant rootlets or tendrils. The facing may have a number of apertures or holes upon which the containers may be located. The container may be located on the inner face, the plants preferably going through holes 12 in the lower part and then growing up the outer face. The panel may incorporate a tubular reservoir for automatic watering. The hoarding may include a frame 3 located on the inner side of the hoarding.