The object of the invention is a plant cultivation container, wherein the plants do not need to be transplanted during cultivation or growth. The container is provided with pull-out trays and this allows continuous adaptation of the container volume to the growth and development of the root system. The container of the invention provides for continuous oxygen and air supply to the root system and for development of fibrous roots contrary to root spiralisation which is typical of conventional containers. The pull-out tray has several functions: partitioning of container volume to compartments, retaining of excess water while watering, and as a drip tray when the entire container volume is in use. The walls of the container are provided with slits at various heights which in conjunction with several pull-out trays partition the entire volume of the container along its height to several compartments. The slits are dimensioned in a way to adapt to the thickness and the height of the pull-out tray side walls and the pull-out tray bottom when the pull-out trays are inserted into the slits. The pull-out trays are simply insertable into and removable from the slits and this is why the container volume can simply be adapted to the growth and development of the root system.
