Veraison is the term used for when the grapes turn from green to dark blue. When it happens is determined by when buds form and the weather that transpires afterward. Cool breezes on Atlas Peak cause bud break to occur later than most of Napa Valley, also delaying color change. Grapes are ready to harvest approximately 65 days after mid-veraison. This year color change is two weeks earlier than last year. I like this because it means there is a good chance we will be able to harvest in September. Since I have been on Atlas Peak, I have found that getting the fruit ripe early, not only reduces risk from fire and other hazards, it typically produces some of the best complexity and flavors for my style of winemaking.