To solve problems that the worst defect of a conventional plastic pot causes obstacles such as root rot, etc., of a plant planted in the pot due to inferior air permeability to hinder its growth, in a general pot trellis, pots are only placed on the tops of the trellis and unstable, tools, etc., have to be used in assembly, a time and labor are required and further watering is restricted in a place, for example, the interior of a room, avoiding water.

Plastic pots (1) with peripheral wall holes in which a plurality of holes of arbitrary sizes are bored through a peripheral wall are combined with saucers (18) and an installation trellis (7) of exclusive use and can be used. The installation trellis (7) is constituted of three parts of a rear face part (8), side faces (9) and trellis parts (10) and can be simply folded.