Greenhouse comprising a wall and a roof, a ventilation opening in the wall or the roof to form a ventilation passage, and a netting system to prevent passage of insects through the ventilation passage, wherein the netting system comprises a netting that is formed with a gauze, wherein the gauze comprises a woven textile with warp threads and crossing weft threads that alternatingly go over and under the consecutive warp threads whereby the warp threads and the weft threads both have a triangular undulating shape along their length, wherein the warp threads and the weft threads each comprise at least one strand formed with a plastic resin and a phosphorus-containing flame retardant and optionally one or more additives, wherein in the strands buckles are formed at their crossings to keep the warp threads and crossing weft threads positioned parallel and spaced apart from each other.
