Plant pruned to fan system at beginning of third season. Some fruit will be produced in the third season. Select fruiting canes from renewal spurs where possible. Otherwise, select them from near the base of last year's fruiting cane and if possible leave three or four spurs for use the following year. Arbors Many prefer to grow grapes on an arbor, thus combining the benefits of fruit production, shade and ornamental effects.
Vines grown on arbors generally produce less low-quality fruit than traditional systems do.
Suitable arbors can be in an almost endless number of designs. A more important consideration is that the arbor be constructed of durable materials requiring minimal maintenance. Providing this amount of foliage cover re-quires a larger and taller plant than is necessary for an ordinary trellis. In this situation there is a tendency to prune too lightly, if at all. Often the end result is a tangled mass of multiple trunks, numerous canes, weak growth and poor fruit production.