Vine leaves are drawn in between a rubber roller and a perforated drum by a suction fan, removed from the vine and ejected from the machine. Thanks to a parallelogram joint, the leaf remover glides gently over the grape area. When used at the end of the flowering season, a fan blows the blossoms clean, i.e. the smallest flower parts are removed. This prevents the formation of nutrients that would allow fungi and bacteria to grow.