Step Manage Existing Trunk Renewals

Inspect the vine to determine if a trunk renewal cane had been saved the previous pruning period. If so, try to use a cane near the top of this trunk renewal to replace a cordon, if the chosen training system uses cordons, or as a fruiting cane. If there is only weak cane growth on this trunk renewal, retain two or three two-node spurs near the top of the trunk renewal to promote strong cane development for next year. If that isn't possible, prune out this trunk renewal completely. If the total number of desired fruiting canes for the vine can be located on the trunk renewal, prune out the old trunk(s) to keep the vine structure simple. However, don't be in a rush to prune out old trunk(s) if they are still needed as a source of fruiting canes.

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