The present invention provides a vegetation bed comprising knit multifilament fibers made from aliphatic polyester, the vegetation bed having excellent transportability and excellent properties with respect to ultraviolet degradation. The present invention pertains to a vegetation bed composed of cylinders of knit fabric composed of a multifilament fiber comprising aliphatic polyester, and filled with a culture, the fabric being placed contiguously side by side, or to a vegetation bed characterized in being composed of two cylinders of knit fabric that are placed contiguously side by side, having a concave portion occurring at their top in which a culture is placed.