Second year Select the most vigorous cane and remove all others. Plants look like this after pruning in second season. Early in the second growing season, some cane selection for the next year may be possible on the larger, more vigorous plants. When new shoots are 1 to 3 inches long, remove all but three or four arising from near each wire. Flower or fruit clusters are best removed as noticed.
Plants bearing no fruit make stronger vine growth.
In the dormant period preceding the third year, the more vigorous plants should consist of a main stem or trunk reaching to one or both trellis wires and having several canes. Considering position and vigor, select two of the best canes at each wire and remove the others. Shorten the selected canes leaving two to four buds on each. See Figure 6. Plants pruned and tied to the lower wire in the second year may be pruned as in Figure 7.