Global warming has opened the door to additional grape varieties in Bordeaux. The General Assembly of Bordeaux AOCand Bordeaux Superieur has approved a new list of grape varieties that, if passed by the INAO, will help growers adapt to changing climate with hardier stock.

The present collection of six grape varieties will expanded by 7 more varieties. The reds included arinarnoa, castets, marselan and tourigna nacional and the whites include alvarinho, liliorila and petit manseng.

If approved, these secondary varieties cannot make up more than 5 percent of the vineyards or 10 percent of any blend. Furthermore, these grapes cannot be listed on the label.

It is not surprising that growers are seeing dramatic changes from the changing weather patterns. Grapes that flourished decades ago aren’t producing the same results as temperatures warm. Grapes are being picked later in the year and are loaded with sugar. The results are riper and more alcoholic wines.

I doubt we’ll see much change in the blends of first growths, but AOC and Bordeaux Superieur wines will quickly adapt these varieties. Yet, even they are planted next year, it will be several years before the new vines produce usable grapes.

Touriga nacional is a variety that does very well in Portugal. Alvarinho is another name for Spain’s popular albarino grape. Arinarnoa is a cross between tannat and cabernet sauvignon. Marselan is also a cross but between cabernet sauvignon and grenache. Petit manseng is grown in France along the Spanish border.