The present invention relates to a distributor apparatus adapted for positioning individual pieces of a length of growth medium cut into pieces of suitable size into a propagation tray. The distributor apparatus comprises a plurality of distributor units configured to move between a loading position and an unloading position. Each distributor unit comprises an open-ended channel or cavity adapted for receiving a whole number of growth medium pieces. The distributor units, in a loading position, are positioned relatively to each other such that their open-ended channels or cavities are disposed in continuation to each other to form a receiving unit with an open-ended channel or cavity adapted for receiving a single length of growth medium pieces. The distributor units, when in an unloading position, are rotated, relative to their loading position, such that their open-ended channels or cavities are disposed parallel relative to each other.