To provide a rooftop greening planter which is used for the greening of the rooftop of a building, can upward or downward induce a liana in the peripheral portion of a net-like panel, and enables to clearly recognize the peripheral portion of a net-like panel.

A net-like panel 20 for inducing the vines of a cultured liana is disposed on a planter main body 10 in which soil is filled to culture the plant. The net-like panel 20 has a double wire net structure, and the periphery of the net-like panel is laterally projected from the planter main body 10. An expanded auxiliary member 30 is attached to the periphery of the net-like panel 20. The expanded auxiliary member 30 comprises an expanded auxiliary member main body 31 having a mesh structure, and leg portions 32 formed at both the side ends of the expanded auxiliary member main body 31. The cultured liana is downward induced along the expanded auxiliary member 30 in the periphery of the net-like panel body 20.