Terroir

Soil, climate, and the natural forces that shape a wine.

213 articles

Climate & Weather39

Alpine Climate Viticulture (Valais, Alto Adige, Valle de Uco)Atlantic Influence on Coastal Vineyards California Mediterranean Climate Carneros Cool-Climate Hinge Cascade Rain Shadow Climate Change and Viticulture: Growing Seasons Extending as Harvest Dates Shift Earlier Climate Types in Wine: Continental, Maritime, Mediterranean, and Beyond Coastal Fog & Marine Layer (Napa, Sonoma Coast, Casablanca)Cold-Climate Viticulture Continental Climate in Wine: Burgundy, Germany, and Argentina Cool Climate Viticulture — Character & Grape Suitability Cool-Climate Wine Production Diurnal Temperature Variation Drought Stress in Continental Vineyard Zones Dry Summer / Wet Winter Cycle & Disease Pressure El Niño & La Niña: Impact on Global Wine Vintages Extreme Diurnal Range — Day/Night Temperature Swing and Its Effect on Wine Föhn Wind Phenomenon (Alpine Warming — Switzerland and Austria)Frost Risk & Late-Season Freeze Events Growing Degree Days (GDD) and the Winkler Scale Heat Summation & Ripeness Potential High-Altitude Continental Viticulture High-Altitude Viticulture Hot & Arid Climate Viticulture — Challenges & Solutions Maritime / Oceanic Climate (Bordeaux, Champagne, Oregon)Mediterranean Climate (Rhône, Tuscany, Spain, California, Chile)Mediterranean Wind Systems and Their Effect on Vineyards Mediterranean Wine Terroir Meltemi Wind (Santorini — Desiccation & Vine Stress)Mistral Wind (Rhône — Drying, Disease-Preventive)Mountain Wind & Evaporative Cooling at Altitude Nebbia: The Langhe Fog Microclimate Pacific Marine Fog and California Cool-Climate Pacific Marine Influence on the Willamette Valley Pacific vs. Atlantic Influence on Wine Style Tramontane Wind (Languedoc-Roussillon)Tuscan Maritime Climate Warm Climate Viticulture — Ripeness & Style Winds and Wine: How Air Shapes What's in Your Glass

Soil & Geology53

Albarese Albariza — The White Chalky Soil of Jerez Alluvial Soils — Sandy, Stony, and Free-Draining (Argentina and Chile Valley Floors)Argile Rouge: Red Clay Terroir in Châteauneuf-du-Pape, Corsica, and Roussillon Basalt Soils (Alsace, Canary Islands, Wachau — Volcanic Mineral Character)California Volcanic Soils Cation Exchange Capacity (CEC) — Soil's Ability to Hold and Exchange Minerals Chalk Soils (Champagne & English Sparkling Wine — Drainage, Water Reserve & Terroir)Chalk Subsoil: Belemnite vs Micraster Clay Soils — Water Retention, Body & Richness in Wine Columbia River Basalt Group Crasse de Fer: Pomerol's Iron-Rich Subsoil Decomposed Granite — Grus, Drainage, and Mineral Precision Douro Terroir: Schist Soils & Field Blends Galestro Galets Roulés / River Stones (Châteauneuf-du-Pape, Southern Rhône)Gneiss (Alpine Terroir — Graubünden, Valais, Alsace)Granite Soils (Beaujolais Crus, Priorat, Roussillon, Swartland, Alsace Grand Cru)Granite vs Schist: Northern Rhône Soil Typology Gravel Soils — Drainage, Heat Retention & Cabernet Suitability in the Médoc Gravel vs Clay Terroir Hermitage Hill Geology (Granite Tail, Loess Crown, Limestone-Flint Mid-Slope)Iron-Rich / Ferricrete (Koffieklip) Soils of the Western Cape Jory Soil Kimmeridgian Limestone (Chablis)Limestone / Calcareous Soils Llicorella Terroir Loess (Wind-Deposited Silt — Austria, Alsace, Argentina — Silky Texture in Wine)Macigno Malmesbury Shale (Swartland, South Africa)Marl (Clay + Limestone — Champagne, Nuits-Saint-Georges, Rioja Alta)Médoc Gravel Terroir Missoula Floods Picón / Rofe (Volcanic Lapilli — Lanzarote — Wind Barrier & Moisture Retention)Ponca / Flysch (Friuli Collio — Alternating Marl & Sandstone — Mineral Whites)Porphyry Soils (Northern Rhône and South Australia — Igneous Rock with Phenocrysts)Pozzolana (Volcanic Ash — Campania, Etna, Lazio)Pumice Soils (Santorini — Phylloxera-Free, Extreme Minerality)Sandy Soils — Phylloxera-Resistant, Light-Textured Terroirs (Colares & Sable de Camargue)Schist Soils (Douro, Priorat, Swartland, Mosel)Silex / Flint (Pouilly-Fumé — Gunflint and Struck-Match Minerality)Slate / Blue Devonian Slate (Mosel — Heat Absorption; Petrol in Aged Riesling)Soil Types in Wine: A Visual Guide Soils: Jurassic Limestone, Volcanic Basalt, Schist and Greywacke — Tiny Yields, Serious Pinot Noir Southeast Chalk and Limestone Geology: The Cretaceous Connection to Champagne Terra Rossa Tortonian vs Helvetian-Serravallian Soils Tuffeau (Loire Valley Limestone)Volcanic Soils in Wine — Santorini, Etna, and the Canary Islands Volcanic Terroir & Minerality Willakenzie Soil Series Willamette Valley Volcanic Soils (Jory, Willakenzie, Laurelwood)Windblown Loess in the Pacific Northwest

Topography & Geography28

Adriatic Wine Regions Altitude and Acidity Retention in Warm Climates Amphitheater Vineyards — Natural Wind Shelter and Heat Concentration Argentina's Altitude Spectrum (600–3,329m): Mendoza to Jujuy Aspect & Sun Angle at Different Latitudes California Cool-Climate Wine Regions California Mountain Viticulture Côte Brune and Côte Blonde (Côte-Rôtie Sector Frame)Eastern Mediterranean Wine Regions Elevation, Slope, and Aspect: How Geography Makes Wine Forest Influence — Humidity Buffering & Temperature Moderation in Vineyards Hillside vs. Valley Floor — Quality Differential Island Viticulture — Wind Exposure, Salinity & Isolation Lake Effect Thermal Regulation (Finger Lakes, Garda, Constance, Geneva)Lake-Moderated Wine Regions Loire River Axis Mediterranean Island Wine Regions Mediterranean Wine Regions North-Facing Slopes — Shaded Sites (Rare Use in Northern Hemisphere; Southern Hemisphere Reversal)Ocean Proximity & Maritime Climate in Viticulture Rain Shadow Regions — Dry Leeward Slopes (Mendoza, Yakima, Wachau)River Valley & Riparian Moderating Effect Slope Gradient & Drainage Efficiency Sorì: Piemontese South-Facing Exposure South-Facing Slopes — Heat Maximization in the Northern Hemisphere Terraced Vineyards: History and Function (Douro, Priorat, Mosel, Cinque Terre)Tuscan Coast vs Inland Distinction World's Highest Commercial Vineyards (Bolivia, Jujuy, and Beyond)

The Terroir Concept18

Bordeaux Terroir vs. Grape Variety: Left Bank Médoc vs. Right Bank St-Émilion Epigenetics & Vine Adaptation to Specific Sites Over Decades French Terroir Philosophy vs. New World Winemaker-Driven Wine Goût de Terroir — The Taste of Place Historical Farming Practices vs. Industrial Viticulture: Terroir Expression Impact History of Terroir — Cistercian Monks & Clos Classification (Burgundy)Is Terroir Real? — Scientific Evidence & Counterarguments New World Terroir — AVA, GI & Regional Identity Soil Mineral Ion Uptake — What Actually Gets into the Vine and Wine Terroir — Definition, Etymology & Core Philosophy Terroir in AOC Law — INAO (Institut National de l'Origine et de la Qualité)Terroir-as-place (Burgundian philosophy)The Winemaker as Terroir: Auteur Theory of Winemaking Typicité / Typicity — Expression of Origin in Tasting Vine Root Depth and Terroir Expression Vintage Variation Viticulture Decisions as Terroir Expression: Yield, Farming Method, and Harvest Date What Is Terroir, Really? The Beginner's Guide

Viticulture75

110R Rootstock — Deep-rooting; drought-tolerant; suited to dry, low-limestone terroirs Alberello Vine Training American Rootstocks — Vitis riparia, Vitis rupestris, Vitis berlandieri Biodynamic Farming — Rudolf Steiner's Philosophy & Demeter Certification Biodynamic Preparations — 500 (Horn Manure), 501 (Horn Silica), 508 (Horsetail)Biodynamic Viticulture Biodynamic Winemaking Botrytis Management — Avoiding Rot vs. Encouraging Noble Rot California Phylloxera and AXR-1 Rootstock Canopy Management Clonal Selection — Uniformity and Predictability vs. Diversity Clone Selection Composting & Organic Matter Addition in Vineyards Cordon de Royat Cordon Training (Bilateral & Cordon de Royat)Coulure — Poor Fruit Set in the Vineyard Coulure and Millerandage Cover Cropping — Biodiversity, Competition & Soil Health Crop Thinning / Green Harvest Downy Mildew (Péronospora) — Bordeaux Mixture (Copper Sulfate)Drip Irrigation Design & Precision Application Dry Farming — Non-Irrigated Viticulture Flood Irrigation (Traditional Acequia Systems — Argentina)Geneva Double Curtain (GDC)Gobelet / Bush Vine Head Training Green Harvest (Crop Thinning / Vendange Verte) — Timing & Impact on Quality Guyot Double Guyot Simple Guyot Training — Single & Double Guyot Heroic Viticulture Integrated Pest Management (IPM) in Vineyards Kouloura: Santorini's Basket Vine Training Leaf Removal Lutte Raisonnée (Reasoned Struggle — Sustainable Middle Ground)Lyre / U-System — Horizontally Divided Double-Curtain Trellis for High-Vigor Sites Massal Selection / Sélection Massale — Propagating from the Best Individual Vines Millerandage / Shot Berries — Uneven Berry Development Minimal Intervention Viticulture Old Vine California Old Vine Project (South Africa — Certified Heritage Vineyards 35+ Years)Old Vines / Vieilles Vignes — Age, Yield & Terroir Complexity Organic Viticulture — No Synthetic Pesticides or Herbicides Own-Rooted / Ungrafted Vines Parronal Trellis (Chile / South America — Traditional Overhead System)Pergola / Tendone — Overhead Trellis System Pergola & Tendone Training Systems of Northern Italy Phenolic Ripeness Phenological Stages — Bud Break, Flowering, Fruit Set, Véraison, Harvest Photosynthesis in Vines — Leaves convert sunlight, CO₂, and water into sugars transported to grapes via phloem Phylloxera — 1860s Devastation & The Rootstock Revolution Phylloxera & Rootstock Selection (SO4, 110R, 3309C, 101-14, Riparia Gloire)Pierce's Disease (Xylella fastidiosa) — California and Texas Threat Powdery Mildew (Oïdium) — Management, Sulfur & Copper Sprays Pre-Phylloxera Ungrafted Vines: Santorini, Colares, and Champagne Pre-Phylloxera Vines Regenerative Agriculture in Vineyards Regulated Deficit Irrigation (RDI): Stress Timing and Wine Quality Scott Henry System Scott Henry Trellis System Shatter (Coulure) — Poor Fruit Set at Flowering; Flowers Fail to Develop into Berries; Reduced Yields Shoot Positioning Shoot Thinning & Hedging (Summer Pruning)SO4 Rootstock — Moderate to Vigorous; Early Ripening; Widely Planted; Suited to Moist and Limestone Soils Soil Microbiome & Mycorrhizal Associations in Viticulture Sustainable Viticulture Tillage vs. No-Till and Permanent Cover Viticulture Translocation — Movement of Sugars from Leaves to Grape Clusters Post-Véraison Transpiration — Water Loss Through Vine Leaves; Stress Management Critical in Hot Climates Véraison — The Onset of Grape Ripening VIGNO (Vignadores de Carignan — Old-Vine Maule Carignan Collective)Vine Burial: Cold-Climate Chinese Wine Viticulture Vine Density (plants/ha): High Density (Burgundy 10,000+) vs. Low Density (Napa)VSP — Vertical Shoot Positioning What Qualifies as 'Old Vine'? (No Legal Standard — 35, 70, 100+ Years)Yield Regulation (hl/ha) in AOC and DOC Law

A note from me, now and then.

Wines I am drinking, what I am teaching, and the occasional thing worth buying. A few times a season, never spam.