How many buds are typically left on a renewal spur in cane-pruned vines?

In cane pruning, leaving two buds on a renewal spur is a common practice because it strikes a balance between ensuring adequate fruit production and maintaining the health of the vine. Each bud has the potential to produce shoots that can bear fruit in the following growing season, and having two buds allows for some flexibility in case one of the buds does not develop properly.

Leaving just one bud may not provide enough potential for yield, especially if that single bud does not grow optimally. Conversely, leaving three or more buds could lead to excessive growth and overly vigorous shoots, which can be challenging to manage and may lead to lower overall fruit quality. Thus, the practice of leaving two buds promotes both productivity and the long-term health of the vine, making it the preferred choice in grapevine management.