Device for cleaning the outer surface of the circumferential wall of plant pots, comprising:- a frame- a pot track arranged on the frame, which track extends from an input end to an output end and forms a support surface for the plant pots- movement means for moving the plant pots from the input end to the output end- rotation means for rotating the plant pots about their pot axis- a brush for brushing the outer surface of the circumferential wall of the plant pots during said movement- first brush driving means for rotating the brush about a lying axis and- second brush driving means for moving the rotating brush up and down, while engaging the pots circumferential wall, between a first position and a second position, wherein the first position is situated at a lower level than the second position.
