Sémillon
Sémillon is a white Vitis vinifera cultivar native to Bordeaux and registered by VIVC as variety 11480. Its parentage is not confirmed. In South Africa it is also known as Groendruif or Green Grape and has exceptional Cape history: it once dominated local vineyards and remains valued in varietal wines and blends. The moderately vigorous, rather productive vine may be pruned short or moderately long, but responds strongly to soil fertility and site, so crop level must be matched to vine capacity. It suits gravel and clay-limestone soils, buds about six days after Chasselas and reaches mid-season maturity about two and a half weeks after Chasselas. Medium bunches carry large berries. Spring frost, summer drought, grey rot, black rot on young leaves, mites and leafhoppers require attention, although powdery mildew and eutypa are less marked concerns. In favourable sites at controlled yields, Sémillon produces full-bodied, high-quality dry whites with moderate-to-low acidity, subtle pear, quince, apricot, honey and floral character, strong barrel affinity and notable ageing potential. Its thin skins and compact fruit also favour Botrytis cinerea: under alternating mist and dry sun this becomes noble rot for concentrated sweet wine, while persistent humidity causes destructive grey rot. Sauvignon Blanc brings freshness to dry blends; Sauvignon Blanc and Muscadelle are classic sweet-wine partners.
Moderate warmth develops Sémillon's volume and yellow-fruit character, while cool nights and an unhurried finish protect its naturally modest acidity. Avoid frost pockets and drought-prone exposures. For noble rot, misty mornings followed by sunny, ventilated afternoons are ideal; prolonged wetness instead drives grey rot. Cape elevation, maritime influence and airflow can preserve freshness and fruit health.
Maintain a balanced, dependable water supply. Prevent summer drought from stopping ripening, but avoid excess water that increases vigour, shade, berry size and bunch humidity. Use soil and vine measurements to time irrigation, retain functional leaves through heat and reduce water as harvest approaches when fruit health requires it.
Gravelly and clay-limestone soils are established fits. Well-drained gravel can support dry styles; clay-limestone and shallow limestone can sustain slow ripening and sweet-wine concentration. For dry wine choose balanced ground that is neither too wet nor too drought-prone. Avoid excessive fertility, waterlogging and dense growth, and match rootstock to lime, depth, vigour and water reserve.
Use VSP, Guyot or supported cordon to organise growth, ventilate medium bunches and enable precise fruit selection. Choose geometry for vigour, frost risk, slope, mechanisation and the shade needed under Cape sun.
Short or moderately long pruning can suit Sémillon. Confirm basal fertility and adjust bud number to soil fertility, vine capacity, selected material and style. Control yield for full dry-wine flavour and even ripening; noble-rot wine requires far lower realised yield through selection.
Position shoots early, remove congestion and expose the fruit zone gradually without sunburn. Keep air moving through bunches and monitor grey rot, black rot, mites and leafhoppers. Retain enough leaf area for drought and heat, but restrain late growth that shades fruit or traps humidity.
For dry wine, follow acidity, pH, flavour, sugar, skin condition and berry health together, then pick cool before freshness disappears. For sweet wine, harvest only genuinely noble berries in repeated selective passes. Separate clean, noble, underripe and grey-rotted fruit immediately and process each lot to purpose.
Balance integrates Sémillon's natural breadth, modest acidity, subtle aroma and oak affinity while preserving freshness. 2 - Enhance suits a brighter Sauvignon-led blend; 4 - Develop supports concentrated barrel-aged or selectively botrytised wine.
Harvest cool and sort rigorously. For dry wine, whole-bunch or direct pressing with gentle handling limits coarse phenolics; separate press fractions and control oxygen. For sweet wine, sort noble berries by hand and press slowly, accepting low juice yield while excluding sour or grey rot.
Ferment cool to moderate in stainless steel, concrete, neutral wood or barrel. Barrel fermentation can build integration and texture in concentrated dry lots. Malolactic fermentation may be blocked, partial or complete according to acidity and style. Botrytised must ferments slowly and needs close nutrient, temperature and microbial control.
Tank protects purity; fine lees build volume and savoury length. Neutral wood, large format or restrained French oak can frame serious dry wine, while sweet wine benefits from measured barrel maturation. Protect freshness with low oxygen, then allow balanced dry and sweet examples sufficient bottle development.
Blend free-run and press fractions after tasting texture. Sauvignon Blanc can add acid and aromatic lift; Muscadelle may add perfume in sweet blends. Fine selectively, stabilise protein and tartrate risk, manage residual sugar and microbial stability precisely, and bottle with low dissolved oxygen.
Rich White: dry, full and textural, with pear, quince, apricot, flowers, subtle honey and restrained oak. 2 - Aromatic White suits a fresher Sauvignon-led blend; botrytised sweet wine, sparkling base wine and mature Cape varietal expressions are established alternates.
Medium-full to full body; negligible tannin but possible phenolic and lees texture; moderate-to-low acidity; moderate alcohol; pale lemon-gold to deep gold colour. Freshness and balance, rather than aromatic volume alone, determine quality.
Lemon, pear, quince, apricot and mango; noble-rot and mature styles move toward dried apricot, marmalade and candied citrus.
Also: Lees Ageing, Oak Ageing, General Ageing. Pear and quince meet apricot, acacia blossom, beeswax, lanolin, honey, toast and nuts.
Balanced dry wines can evolve from subtle citrus and orchard fruit toward honey, wax, nuts, toast and savoury depth. Botrytised wines gain dried fruit, marmalade, saffron and caramel complexity over decades. Soft, dilute, oxidised or excessively ripe wines fade sooner.
Naturally full, broad and textural.
Low, though skins, pressings and oak can add grip.
Often modest; site and harvest protect freshness.
Moderate, rising with ripeness and concentration.
Pale lemon to deep gold with Botrytis and age.
Great dry and sweet examples develop for decades.
Subtle young; honeyed and complex with age or Botrytis.
Texture and concentration integrate barrel well.
Sauvignon brings lift; Muscadelle adds perfume.
Dry, sweet, blended, sparkling and mature styles.
Balanced water, gravel or limestone and controlled humidity shape Sémillon's richness.
Yield, airflow, fruit health and selective harvest determine dry or noble-sweet quality.
Rich dry white, lifted blend, botrytised sweet wine or sparkling base.