Grapes don’t give a fig if we make wine from them. Like every other species they are only concerned about spreading their DNA hither and yon. Man comes along many millenia after Nature has solved the problem and names the turning of baby green to ripe red – veraison.
The use of color to signify ripeness is manifold in the animal and plant kingdoms. For grapes, the point at which little green berries start to turn into the gorgeous red grapes that lead to gorgeous red wines is, in many ways, the turning point of the season.
In six weeks or so, we will harvest. In between today and then, grapes have already developed the number of cells they will have and those cells will now expand. Skins will start to soften, sugar content will increase, various acids will decrease, and a couple of weeks after the birds have gotten their fill, we will pick for the wines that will sit upon your table three years hence.
Thus the season proceeds, and thus the magic and beauty and hope that is the greatest part of this crazy business.