The 52 hectare Margaux vineyard has increased in size over the years. Most notably in 2008, when they purchased 8.5 hectares from Chateau de La Bourgade. The terroir of Rauzan Segla is mostly gravel based, with some clay in the soils. Chateau Rauzan Segla is planted to 54% Cabernet Sauvignon, 41% Merlot, 4% Petit Verdot and 1% Cabernet Franc. This new vineyard cepage features more Merlot vines and the addition of Petit Verdot. The current makeup of the vineyard represents changes taken by John Kolasa over the past several years. Today, more Merlot is planted in the vineyards at the expense of Cabernet Sauvignon. This helped add additional layers of softness to the wine. The average age of the vines is close to 30 years old. Depending on the parcel, the vines are planted to various levels of density ranging from 6,600 to 10,000 vines per hectare.
For the wine of Chateau Rauzan Segla, the vinification takes place in 35 temperature controlled, stainless steel tanks that vary in size from 41 hectoliters to 220 hectoliters that allows for parcel by parcel vinification. Malolactic fermentation takes place in vat. The wine of Chateau Rauzan Segla is aged in an average of 50% to 60% new, French oak barrels for between 18 to 20 months, depending on the character of the vintage. There is a second wine, Segla. On average, the production ranges from 10,000 to 12,000 cases of Chateau Rauzan Segla per vintage. Segla is not sold as a future and is only offered to the market once the wine is in bottle. The production of Segla is also close to 10,000 to 12,000 cases per year.
Rauzan Segla is managed by John Kolasa, who is also in charge of Chateau Canon in St. Emilion. Prior to the Kolasa era, the wines from the 1950’s, 1960’s, 1970’s, 1980’s and even the 1990’s were moderate at best. A few exceptions can be found, most notably, 1983, 1990 and the stunning 1986 are all great examples of Bordeaux wine from Rauzan Segla.Click here fore more info
With thanks to Jeff Leve from http://www.thewinecellarinsider.com, for the invaluable information