PROBLEM TO BE SOLVED: To provide a planting container lightweight and free from becoming bulky, and excellent in transportability and storageability, and to provide a rooftop greening system using the planting container.SOLUTION: This planting container is formed so as to be in a box-like form by a bottom part 11 and at least three side wall parts 12 by a waterproof sheet material having shape recoverability and foldability, and includes a vertically long bag part 13 set on the inner surface of the side wall part 12 so as to vertically insert a stick-like material into. Furthermore, a connection hole 14 connectable to other container and allowing to circulate water is set on the side wall part 12.
