Winemaking in Bordeaux Winemaking in Bordeaux Winemaking in Bordeaux is the collection of processes used to make Bordeaux wine. Winemaking in Bordeaux differs from winemaking in other places both because of the Bordelais climate and because of the particular Bordeaux style which the wine-maker is aiming for. A large number of processes are involved: pruning, training, spraying, (green harvesting), harvesting, (sorting), (de-stemming), crushing, fermentation, pressing, barrel-ageing, blending, bottling and bottle-ageing. Bordeaux is a relatively humid region. Thus it is a place rife with diseases and other problems that afflict vines, compared with many of the world's other wine regions, such as Chile or
Margaret River (wine region) with only 200 millimetres of the annual 1160 millimetres falling between October and April. The low diurnal and seasonal temperature range means an unusually even accumulation of warmth. Overall the climate is similar to that of Bordeaux in a dry vintage. Although the region produces just three percent of total Australian grape production, it produces over 20 percent of Australia's premium wine market. The principal grape varieties are fairly evenly split between red and white; Cabernet Sauvignon, Chardonnay, Sauvignon blanc, Sémillon, Shiraz, Merlot, Chenin blanc and Verdelho. There are no official Margaret River subregions, although in 1999 viticultural scientist Dr