The present invention relates to a pot device having an external frame for holding a pot inside the frame. The frame has a lower end constituting a support base. The pot device includes connection means arranged for connecting the frame to the pot. The connection means has locking means arranged for locking the pot in an upright position. According to the invention, the extension of the frame in a horizontal plane is adjustable. The diameter of the frame in a horizontal plane is variably adjustable and the frame includes a plurality of circumferentially distributed sections. These sections are telescopically connected to each other in the circumferential direction. The invention further relates to the use of said pot device in a method for transporting a plurality of pots devices on a conveyor system wherein each pot device houses at least one plant, Moreover, the invention also relates to a method for transporting a plurality said pots devices on a conveyor system wherein each pot device houses at least one plant.