 In 1958, there were 1,741 hectares (4,302 acres) of Pineau d'Aunis planted in France.Throughout the rest of the 20th century that number would steadily decline and by 2009 there were 435 hectares (1,075 acres) in France.Pineau d'Aunis is a mid-ripening variety that can produce very irregular yields with the quality of the resulting wine sharply diminished if yields become too excessive.