The criteria for the suitability of a region for viticulture are referred to as viticultural suitability. According to the climatic conditions, the countries of the EU are categorised into the three main zones A, B and (with 5 subzones) C with regard to viticulture:
Main zones and subzones
A: Belgium, Denmark, most of Germany (except Baden), England, Ireland, Luxembourg, Netherlands, Poland, Sweden, Czech Republic (Cechy = Bohemia)
B: Germany (Baden only), northern/eastern France (Champagne, Alsace, Jura, Loire, Lorraine, Savoy), Austria, Slovakia (except Tokay), northern Slovenia (Podravje, Posavje), Romania (Podisul Transilvaniei), Czech Republic (Morava=Moravia)
C Ia: South/West France (Bordeaux, Burgundy, Provence, Rhône, Sud-Ouest), North Spain (Asturia, Cantabria, Coruna, Guipuzcoa, Viscaya), North Portugal, Romania (rest), Romania (rest), Slovakia (Tokay only)
C Ib: small part of northern Italy (Aosta Valley, South Tyrol), Hungary
C II: Bulgaria (Dunawska, Rawnina, Chernomorski Rajon, Rosowa Dolina), southern France (Languedoc-Roussillon), central and northern Italy (Abruzzo, Emilia-Romagna, F-J-V, Liguria, Lombardy except Sondrio, Marche, Campania, Molise, Piedmont, Tuscany, Umbria, Veneto except Belluno, southern Romania, Spain (e.g. Penedés, Rioja), Italy (e.g. Lombardy, Lombardy except Sondrio), Italy (e.g. Lombardy except Sondrio, Marche, Campania, Molise, Piedmont, Tuscany, Umbria, Veneto except Belluno). e.g. Penedés, Rioja), coastal area of Slovenia (Primorska)
C IIIa: Bulgaria (rest), Greece (cooler parts) with Crete, Cyprus (over 600 m)
C IIIb: France (Corsica, Pyrénées-Orientales), most of Greece, southern Italy (Apulia, Basilicata, Calabria, Sardinia, Sicily, other islands), southern Spain (remainder), southern Portugal (remainder), Malta, Cyprus (up to 600 m)
