An apparatus for preparing mixed bouquets by positioning plant parts, wherein the plant parts - each comprise a stem, and - each have a view end and a stem end; and wherein the apparatus - comprises an endless transporting device for forming the mixed bouquets on the endless transporting device, wherein the endless transporting device has a transporting surface which is provided with a plurality of reference organs for positioning the view ends of the plant parts, which reference organs are distributed in the direction of transport of the endless transporting device over the endless transporting device, and - is arranged for supporting the mixed bouquets during the forming thereof using the plant parts, where the endless transporting device comprises a plurality of positioning organs in the direction of transport, wherein a positioning organ comprises the reference organ and two arm elements; characterized in that the positioning organ comprises a support, wherein - the endless transporting device is with reference to the direction of transport at the location of the reference organ provided with the positioning organ and at a distance of the reference organ concerned transverse to the direction of transport of the endless transporting device with the support for supporting the stems at a distance of the transport surface of the endless transporting device relatively close to the stem ends, - the arm elements of the positioning organ are situated between the reference organ and the accompanying support for receiving the plant parts relatively close to the view ends, and - the positioning organs are re-adjustable, the reference organs and the supports being re-adjustable relative to each other. - each comprise a stem, and - each have a view end and a stem end; and - comprises an endless transporting device for forming the mixed bouquets on the endless transporting device, wherein the endless transporting device has a transporting surface which is provided with a plurality of reference organs for positioning the view ends of the plant parts, which reference organs are distributed in the direction of transport of the endless transporting device over the endless transporting device, and - is arranged for supporting the mixed bouquets during the forming thereof using the plant parts, where the endless transporting device comprises a plurality of positioning organs in the direction of transport, wherein a positioning organ comprises the reference organ and two arm elements; - the endless transporting device is with reference to the direction of transport at the location of the reference organ provided with the positioning organ and at a distance of the reference organ concerned transverse to the direction of transport of the endless transporting device with the support for supporting the stems at a distance of the transport surface of the endless transporting device relatively close to the stem ends, - the arm elements of the positioning organ are situated between the reference organ and the accompanying support for receiving the plant parts relatively close to the view ends, and - the positioning organs are re-adjustable, the reference organs and the supports being re-adjustable relative to each other.