Virginia wine refers to wine made primarily from grapes grown in the U.S. state of Virginia. Wine has been produced in the area since the early days of European colonization in the 17th century. Virginia has hot humid summers that can be challenging to viticulture, and only within the last twenty years has the industry developed beyond novelty status. By tonnage, Vitis vinifera varieties represents 75% of total production. French hybrids varieties account for nearly 20% of total wine grape production in the state, while American varietals make up only about 5% of the total. As of 2012, the top 5 varietals produced are Chardonnay, Cabernet Franc, Merlot, Vidal blanc and Viognier.