Grenache blanc B
Name of vine variety in France
Grenache blanc
Origin
This variety corresponds to the white mutation of Grenache N and was originally found in the provinces of Barcelona and Tarragona in Spain.
Synonymy
No synonym is officially recognized in France for this variety.In the European Union, Grenache blanc B can be officially be called by other names: Garnacha Blanca (Spain) and Lladoner Blanco (Spain).
Regulations
In France, Grenache blanc B is officially listed in the "Catalogue of vine varieties".

This variety is likewise listed in the Catalogues of other European Union member countries: Bulgaria, Cyprus, Spain and Greece.
Use
Wine grape variety.
Evolution of area under vines in France
1958 1968 1979 1988 2000 2008 2016
ha 8652 9362 16286 12083 6843 4931 5804
1958 to 1988 Grenache blanc B and gris G
Description
Identification signs are the same as for Grenache N, except:
- flower calyptras are entirely green whereas in Grenache N and Grenache gris G there is anthocyanin pigmentation.
- when ripe, the berries have a greenish yellow skin color.
Genetic profile
Microsatellite VVS2 VVMD5 VVMD7 VVMD27 VRZAG62 VRZAG79 VVMD25 VVMD28 VVMD32
Allel 1 135 223 239 191 188 258 240 243 239
Allel 2 143 238 243 191 188 258 254 243 249
Phenology
Bud burst: 4 days after Chasselas.Grape maturity: period II, 3 and 1/2 weeks after Chasselas.
Suitability for cultivation and agronomic production
This variety appears less sensitive to shot berries than Grenache N and is a little earlier. It shows good wind resistance; upright growth and is well adapted to drought conditions (gravely, stony soils). Like other types of Grenache, Grenache blanc B easily displays signs of magnesium deficiency.
Sensitivity to diseases and pests
Grenache blanc B is very sensitive to grey rot, phomopsis, downy mildew and bacterial diseases. On the other hand, it is rarely affected by powdery mildew, "grillure" leafhoppers and mites.
Technological potential
The clusters are large while the berries are moderate size. Grenache blanc B is used for making naturally sweet wine and also for making interesting white wine with a long after taste, fatty and full bodied, but someimes lacking a bit of acidity.
Clonal selection in France
The two approved Grenache blanc B clones carry the numbers 141 and 143.
Bibliographic references
- Catalogue des variétés et clones de vigne cultivés en France. Collectif, 2007, Ed. IFV, Le Grau-du-Roi.
- Documentation interne du Domaine de Vassal. 1949-2011, INRA, Marseillan-plage.
- Cépages et vignobles de France, tome 2. P. Galet, 1990, Ed. Dehan, Montpellier.
- Ampélographie. P. Viala et V. Vermorel, 1902-1910, Ed. Masson, Paris.
Description of clones approved in France
Identity and availability Agronomic data Technical data
Clone number Origin Selection Fertility Production level Sugar content Potential color
Year approved Agronomic references Weight of grape clusters Vigor Total acidity Tannic structure
Growing surface area Size of berries Sensitivity to Botrytis Aromatic intensity Oenological aptitudes
141  Aude  INRA  medium to high  medium  medium  
 1972  Languedoc-Roussillon
Vallée-du-Rhône
 medium  medium  medium  
 8.88 ha        wines with an intense and refined nose; mellow and lingering on the palate
143  Aude  INRA  medium  medium  medium  
 1972  Languedoc-Roussillon
Vallée-du-Rhône
 medium  medium  medium  
 4.49 ha        wines with an intense and refined nose, good finish
1213  Pyrénées-Orientales  CA 66 - IFV  medium to high  medium  medium to high  
 2014  Roussillon  medium to low  medium to high  medium to high  
   medium    medium to high  balanced wine with good aromatic intensity
Clone suited for making natural sweet wines with sugar content and higher acidity
Most upright and good drought tolerance