Château Calon Ségur is a Saint-Estèphe Third Growth (1855) and the northernmost of the Médoc’s classified estates, drawing its grand vin from an enclosed 55-hectare vineyard of gravel and clay. The 2025 is still a barrel sample, but critics largely agree it is a serious, classically built Calon with notable refinement.
Several reviews qualify as excellent. Jane Anson rates it 98, calling it “an exceptional Calon” and “one of the wines that really showcases the highest potential of the vintage,” emphasizing “graphite and slate” texture and a “slow unroll” of “iris bud, cassis, crushed violet flowers, espresso and cocoa bean.” Winedoctor is even more emphatic at 97–99, describing “superb balance” and “one of the greatest young Calons I have tasted.” Vinous’ Antonio Galloni (95–97) calls it “a total head-turner,” noting it is “packed with intense fruit and equally potent tannins” and advising patience.
Aromatic signatures repeat across tasters: florals (violet, rose petal, iris), cassis and dark berries, plus savory herbs and mineral tones. Galloni notes “dried herb, crushed rose petal and mint.” Robert Parker’s Wine Advocate’s William Kelley (95–97) highlights “dark berries, rose petals and violets,” “ultra refined tannins,” and a “long, penetrating finish,” reporting 13.6% alcohol and pH 3.6.
Blend details vary by source, but most reviewers cite 80% Cabernet Sauvignon, 17% Merlot, 2% Cabernet Franc and 1% Petit Verdot; Kelley reports a higher Merlot component (34%). The élevage is consistently described as 20 months in 100% new oak.
Harvest ran roughly September 4–20, with yields around 35 hl/ha (Anson; Jeff Leve). Leve (96–98) calls the finish “long, refined, powerful, restrained, and focused,” projecting a long drinking window (2032–2065). Despite its structure, Decanter suggests it feels “a bit more accessible than Calon can sometimes be” at this stage.
