The objective of the present study was to investigate how far and from which side reflective mulches effectively reflect light into the tree crown to improve the colour of apple fruit under hail net in the autumn when light is limiting at 50° N latitude. Therefore, polypropylene mulch (LumilysTM) was spread 2.6 m wide in the alleyways and (recycled) aluminum foil in the herbicide strip under the trees (0.6 m either side of the tree) six weeks prior to anticipated harvest.