 The phylloxera epidemic in the 19th century severely affected the Languedoc wine industry , killing off many of the higher quality Vitis vinifera that were susceptible to the louse . American rootstock that was naturally resistant to phylloxera did not take well to the limestone soil on the hillside . In place of these vines , acres of the lower quality Aramon , Alicante Bouschet and Carignan were planted . 
 The phylloxera epidemic in the 19th century severely affected the Languedoc wine industry , killing off many of the higher quality Vitis vinifera <a href='null_relcl' title='1'><mark>that</mark></a><a href='uninflect' title='2'><mark>were</mark></a> susceptible to the louse . American rootstock <a href='null_relcl' title='3'><mark>that</mark></a>was naturally resistant to phylloxera did not take well to <a href='None' title='4'><mark>the</mark></a>limestone <a href='negative_concord' title='5'><mark>soil</mark></a> on the hillside . In place of these vines , acres of the lower quality Aramon , Alicante Bouschet and Carignan <a href='uninflect' title='6'><mark>were</mark></a> planted . 
The phylloxera epidemic in da 19th century severely affected tdaLanguedoc wine industry , killing off many of the higher quality Vitis vinifera was susceptible to the louse . American rootstock was naturally resistant to phylloxera did not take well to limestone no soil on the hillside . In place of these vines , acres of the lower quality Aramon , Alicante Bouschet and Carignan was planted .