Flowering is the point of the vine’s vegetative cycle when the flowers open. Flowering occurs mid-June at the vineyards of Casa lo Alto and it is very important because it determines the volume of the harvest. Both the cold and the rain can alter the flowering process, which lasts approximately one week. After flowering, it is possible to statistically evaluate the number and the distribution of the bunches on the vines, to know if nature has been too generous or if the distribution can be unfavourable for achieving good ripeness. Vine-growers usually allow approximately 100 days between flowering and harvesting.