The vineyards of the Cognac Delimited Region include approximately 5,900 grape growers who produce white wine for Cognac making. The variety most widely planted are Ugni Blanc grapes, although Folle Blanche and Colombard are also found. This late maturing variety has a good resistance to grey rot and produces a wine with two essential features: a high acidity level and, generally speaking, a low alcohol content. Since the phylloxera plague suffered at the end of the 19th century, all the varieties used have been grafted onto various rootstocks according to the type of soil.