<p>A cultivation device has a lid member (2) and a container (3). The lid member (2) is placed in a container (3) so as to be separated from a bottom section (6) of the container (3) and has vertically penetrating holes. The container (3) has an opening (4) in one side, and the opening (4) communicates with an air gap between the bottom section (6) of the container (3) and the lid member (2).</p>
