A light pollution screening arrangement for a greenhouse is disclosed wherein the screening arrangement (1) comprises a first retractable screen (2) and a second retractable screen (3). The first and second retractable screens (2, 3) each have a longitudinal extension (ys) in a y-direction and a transverse extension (xs) in a x-direction, and said screening arrangement has a z-direction perpendicular to said x- and ydirections. The first and second retractable screens (2,3) each have one or more light assimilation sections (4a,b)； and the first retractable screen (2) is arranged at a distance d in said z-direction from said second retractable screen (3). The one or more light assimilation sections (4a) in said first retractable screen (2) are arranged to partially overlap with one or more light assimilation sections (4b) in said second retractable screen (3). A greenhouse comprising the screening arrangement is also described.
