Château Calon-Ségur

According to the estate, Calon Ségur's noble house was one of the main strongholds of the Lords of Lesparre in the Middle Ages, and Bordeaux University archives show taxes were paid on Calon's wine in the 12th century. Ownership passed through the De Lur, De Marsan, De Vallier and De Gascq families before Jeanne de Gascq married Jacques de Ségur in 1670. Their son Alexandre de Ségur (1674-1716) married the heir to the Latour estate and purchased Lafite in 1715. In 1718 his son, Nicolas-Alexandre, Marquis de Ségur, added Mouton, putting every future Médoc First Growth except Margaux in the family's hands; the Marquis died in 1755. The Dumoulin family, which succeeded the Ségurs, relinquished the estate to Firmin de Lestapis in 1824. Calon Ségur was ranked a Third Growth in the 1855 Classification. In 1894, Georges Gasqueton, who also owned Château Capbern in Saint-Estèphe, acquired the growth with his uncle Charles Hanappier, and the Gasqueton family ran the estate for the rest of the century, through Georges, Edouard and then Philippe Gasqueton. After Philippe Gasqueton's death, his wife Denise Gasqueton took over in 1995 and, with her daughter Hélène de Baritault, carried out renovation work in the cellars and vineyard; Denise Gasqueton died in September 2011. In 2012, Suravenir, a subsidiary of the Crédit Mutuel Arkéa banking group, acquired Château Calon Ségur together with Château Capbern. Suravenir chairman Jean-Pierre Denis formed a partnership with Jean-François Moueix and his son Jean, owners of the Videlot group, to carry out the estate's renovation. Press coverage of the sale put the price at roughly €170 million; Decanter reported that Videlot, the minority shareholder, is a Bordeaux wine company owned by Jean-François Moueix, who also owns Pomerol's Pétrus.

• Ownership traces from the De Lur, De Marsan, De Vallier and De Gascq families to the Ségur family from 1670; Nicolas-Alexandre, Marquis de Ségur, died in 1755 after adding Mouton to a portfolio that already included Lafite and Latour
• The Gasqueton family owned the estate from 1894 (Georges Gasqueton and Charles Hanappier) until 2012, with Denise Gasqueton at the helm from 1995 until her death in September 2011
• Suravenir (Crédit Mutuel Arkéa) bought Calon Ségur and sister property Château Capbern in 2012; the deal, reported at roughly €170 million, included a minority stake for Jean-François Moueix and son Jean of the Videlot group

The vineyard covers 55 hectares (136 acres) as a single walled block, formed by three gravel outcrops that extend toward the Gironde estuary as far as a small chapel on the property. The estate describes the soil as a thick layer of Quaternary gravel over a predominantly Tertiary clay subsoil, capped by a fine layer of lacustrine clay at the summit of the gravel deposits; altitude does not exceed 13 meters. Only about 45 of the 55 hectares are in production at any time, out of 50 hectares planted, which allows some plots to rest between replantings. The estate's technical sheet lists the current planting as 57% Cabernet Sauvignon, 34% Merlot, 7% Cabernet Franc and 2% Petit Verdot, trained by double Guyot at a density of 8,000 vines per hectare with an average vine age of 20 years. A restructuring program begun in 2006 aims to raise Cabernet Sauvignon to 70% of the vineyard and vine density toward roughly 10,000 vines per hectare by 2032, replanted using massal and clonal selections chosen to preserve genetic diversity. Estate manager Vincent Millet, who has overseen a comprehensive soil study since his arrival in 2006, calls Cabernet Sauvignon "the backbone of Calon Ségur"; the variety has made up three-quarters of the grand vin's blend since the 2008 vintage and can reach 90% in the best years.

• 55-hectare walled vineyard (136 acres), the same size the estate held at the time of the 1855 Classification; roughly 45 to 50 hectares are planted or in production at any time
• Soils: Quaternary gravel over Tertiary clay subsoil with a lacustrine clay cap at the summit of the gravel; current blend 57% Cabernet Sauvignon, 34% Merlot, 7% Cabernet Franc, 2% Petit Verdot at 8,000 vines/ha
• Replanting program launched in 2006 targets 70% Cabernet Sauvignon and about 10,000 vines/ha by 2032; Cabernet Sauvignon has formed roughly three-quarters of the grand vin blend since the 2008 vintage

A new gravity-flow vat room became operational on September 26, 2016, in time for that year's harvest; the renovated ageing cellar received its first barrels that November. The vat room holds 75 conical, temperature-controlled stainless steel tanks ranging from 5 to 120 hectoliters, sized to vinify individual plots and massal and intra-plot selections separately; grapes are hand-picked, sorted on the vine, then mechanically and by hand, cooled to 12°C, and moved to the tanks without pumps for a pre-fermentation cold soak. Vatting runs 18 to 21 days with microbubbling, and co-inoculation with exogenous yeast and bacteria takes place in stainless steel at 25°C. The grand vin, Château Calon-Ségur, is aged 20 months in 100% new French oak barrels and fined with egg white. The second wine, Le Marquis de Calon Ségur, averages about 75% Merlot, follows separate plots from the outset, and is aged about 17 months in barrels of which roughly a third are new. The third wine, formerly called La Chapelle de Calon and then Le Saint-Estèphe de Calon Ségur, was renamed Le C de Calon Ségur from the 2019 vintage; it is sourced mainly from young vines and limestone-rich parcels and aged 16 months in barrels that are three years old. The renovated first-year barrel cellar holds 1,100 barrels, about two and a half times the capacity of the previous cellar, and connects to the vat room through a 35-meter underground gallery.

• New gravity-flow vat room operational September 26, 2016: 75 conical stainless-steel tanks (5-120 hL); grapes handled without pumps, cold-soaked at 12°C, vatted 18-21 days
• Grand vin aged 20 months in 100% new French oak and fined with egg white; Le Marquis de Calon Ségur (second wine, ~75% Merlot) aged about 17 months in roughly one-third new oak
• Third wine Le C de Calon Ségur (formerly La Chapelle de Calon, then Le Saint-Estèphe de Calon Ségur; renamed since the 2019 vintage) is aged 16 months in three-year-old barrels, sourced from young vines and limestone parcels

Éric Boissenot serves as consultant oenologist for both the grand vin and the second and third wines. Vincent Millet, who came to Calon Ségur from a background in neuro-biology, has been estate/technical director since 2006 and led the comprehensive soil study behind the replanting program. Laurent Dufau became managing director of the estate in 2013; according to Decanter, he had previously been managing director of négociant company Ballande & Meneret since 2005 and comes from a Médoc wine-growing family with a small estate in Listrac. Suravenir chairman Jean-Pierre Denis, who purchased the estate on behalf of the Crédit Mutuel Arkéa group, is described by the estate as a long-time wine collector who developed his interest in wine at 35. The estate says about fifty people work across its vineyard, cellar, administrative and hospitality teams.

• Éric Boissenot: consultant oenologist across the estate's wines
• Vincent Millet: estate/technical director since 2006, led the soil study underpinning the vineyard's restructuring
• Laurent Dufau: managing director since 2013; previously managing director of négociant Ballande & Meneret from 2005, per Decanter

The Wine Cellar Insider's Jeff Leve describes Calon Ségur's style before the 2012 ownership change as "masculine, sturdy, tannic, structured, and traditional," leaning toward a brawny Saint-Estèphe profile that often needed a decade or two to soften. He writes that, starting with the 2014 vintage and under Laurent Dufau's direction, the wines of Calon Ségur and Capbern became "softer, lusher, riper, more forward, and refined." Leve's tasting notes for recent vintages score the 2022 grand vin 96 points (blend 70% Cabernet Sauvignon, 24% Merlot, 5% Cabernet Franc, 1% Petit Verdot) and the 2023 grand vin 96 points (72% Cabernet Sauvignon, 15% Merlot, 12% Cabernet Franc, 1% Petit Verdot), and he calls the 2016 vintage "absolutely stunning in every sense of the word." He lists the estate's best vintages as 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015, 2014, 2010, 2009, 2005, 2003, 2000, 1990, 1982, 1953, 1949, 1947, 1945, 1929 and 1928, and recommends 10 to 15 years of aging in good vintages, with peak drinking between 15 and 50 years after the vintage.

• The Wine Cellar Insider: pre-2012 style "masculine, sturdy, tannic, structured, and traditional"; since the 2014 vintage under Laurent Dufau, "softer, lusher, riper, more forward, and refined"
• The Wine Cellar Insider scores: 2022 grand vin 96 points, 2023 grand vin 96 points; 2016 called "absolutely stunning in every sense of the word"
• The Wine Cellar Insider's recommended drinking window: 10-15 years minimum in good vintages, peak maturity between 15 and 50 years from the vintage

Primary sources (producer's own site): https://www.calon-segur.fr/en/, https://www.calon-segur.fr/en/chateau-calon-segur/, https://www.calon-segur.fr/en/le-marquis-de-calon-segur/, https://www.calon-segur.fr/en/saint-estephe-de-calon-segur/, https://www.calon-segur.fr/en/over-the-centuries/, https://www.calon-segur.fr/en/the-prince-of-the-vines/, https://www.calon-segur.fr/en/the-owners/, https://www.calon-segur.fr/en/the-heart/, https://www.calon-segur.fr/en/the-heritage/, https://www.calon-segur.fr/en/le-classement-de-1855/, https://www.calon-segur.fr/en/unique-terroir/, https://www.calon-segur.fr/en/a-reinvigorated-vineyard/, https://www.calon-segur.fr/en/the-magic-of-a-walled-vineyard/, https://www.calon-segur.fr/en/cabernet-sauvignon-reigns-supreme/, https://www.calon-segur.fr/en/the-people-of-the-estate/, https://www.calon-segur.fr/en/the-vat-room/, https://www.calon-segur.fr/en/the-ageing-cellars/, https://www.calon-segur.fr/en/the-project/, https://www.calon-segur.fr/en/contact-authentication/. Secondary sources: The Wine Cellar Insider (thewinecellarinsider.com), Decanter China, article by Jane Anson (14 August 2013, decanterchina.com). Last verified 2026-09-13. Where the producer's site and a secondary source disagree, the producer's site governs (see conflicts.json).