Plant tray (1) comprising a series of columns (2) and/or sets of columns (2) of plant pockets (3), wherein at least two of said columns (2) and/or sets of columns (2) are movably connected to each other, such that they can move relative to each other between at least a first position in which they are relatively close to each other, preferably abutting, and a second position, in which they are spaced apart further than in the first position.
