Viticulture refers to the growing of grapes for the production of wine. Ontario, and British Columbia are the two largest wine-growing regions in Canada, although grapes are also grown in other regions of Canada, including Quebec, and the Maritimes. In 2015, Canada produced 56.2 million litres of wine. Approximately 62 per cent of all wines produced that year originated from Ontario, while wineries from British Columbia constituted 33 per cent of that years wine production. Canada is the largest producer of ice wine, producing more ice wine than all other countries combined.