Completely automated multi-shelf seedling growing system

A seedling growing system comprising:

• a) a storage provided with heat insulating treatment;
• b) a movement means including a mounting part for mounting a seedling growing tray and configured to move on a predetermined path in the storage;
• c) seedling growing tray racks including:
• a multi-shelf germination rack configured to hold, until germination, a seedling growing tray on which seeds are sown,
• a multi-shelf seedling growing rack configured to hold a seedling growing tray on which seedlings have germinated, and
• a multi-shelf shipment rack configured to hold a seedling growing tray for shipping grown seedlings,
• the multi-shelf germination rack, the multi-shelf seedling growing rack, and the multi-shelf shipment rack being disposed side by side on a side or sides of the path in the storage;
• and
• d) a transfer means provided to the movement means, including:
• d-1) an arm including a leading tip that is movable from below a position where a seedling growing tray is placed on one of the seedling growing tray racks toward the mounting part;
• and
• d-2) steps fixed to the leading tip and capable of meshing with steps on a bottom of a seedling growing tray, the steps on the bottom of the seedling growing tray being aligned in a movement direction of the arm when the seedling growing tray is placed on one of the seedling growing tray racks,
• the transfer means being configured to transfer each seedling growing tray between the mounting part and each of the multi-shelf germination rack, the multi-shelf seedling growing rack, and the multi-shelf shipment rack.