During the cold months, the vine rests. It is its vegetative rest period, and the one that is used to prune and prepare each vine so that it can give its best in the following cycle.
Pruning is a task that has remained practically unchanged for 2000 years. Did you know we learned to prune thanks to a donkey? Yip, a donkey decided to snack on a vine and the following year it grew more vigorously than the rest. Blooming donkey!