The wire spreader is fixed directly onto the moving / fruiting wires, and sits on a pair of hooks to secure it into position. The height location of the wire spreader depends on how the vines are trained. The double wires that are attached to the wire spreader are then opened between 20 or 30 cm wide in the spring after the vines are pruned. This ensures that the shoots grow between the moving/fruiting wires. After the shoots have reached the desired height, the wire spreader can be closed and the shoots are fixed upwards for further vertical growth in a single step. Depending on the vine variety and the growth of the vines, this can then be repeated in the upper wire areas of the trellis and therefore the row of vines closed completely in a second step.
This wire laying system substantially reduces manual labour, depending on the vine variety.