The invention relates to a shading device (10) for a greenhouse (15), with a shading element (20) and at least one lighting element (50,50′), wherein the shading element (20) comprises an outer side (21) and an inner side (22), the shading element (20) is formed from interwoven electrically conductive first thread elements (30,30′) and electrically insulating second thread elements (40), the first thread element (30,30′) comprises a reflective mean (33), reflecting an ambient light (60), the lighting element (50,50′) is arranged at the inner side (22) of the shading element (20) and connected with the first thread element (30,30′), and the lighting element (50,50′) is driven by an electrical current, conducted by the first thread element (30,30′), resulting in the emission of an artificial light (51), illuminating a plant (80) growing in the greenhouse (15).