The present invention relates to a container for propagating growth of seedlings, having a main body comprising a base, a central wall extending vertically from the base. A first wall section and a second wall section are arranged to the main body. The first wall section and the second wall section are hingeably connected to the main body. The base, the central wall, the wall sections forms in the closed condition at least two cells being open at top. The base comprises a sup-porting structure at the lower part of the main body, wherein the main body is provided with supporting means for holding an irrigation mat. The present invention also relates to a tray designed for receive and carry one or more of said containers, a greenhouse including the tray and one or more of the mentioned containers, and a method for propagating growth of seedlings.
