Red wine grape · Vitis vinifera
A red wine grape originally from southwestern France, officially registered in France under the name Cot and widely known as Malbec.
Plantgrape's entry is registered as Cot, originally from the south west of France, and notes the variety can officially be called Malbec in France. UC Davis FPS devotes a chapter to Malbec's history, independently confirming the same cultivar's identity.
Plantgrape reports, based on genetic analysis carried out in Montpellier, that Cot would be the result of crossbreeding between Magdeleine noire and Prunelard. This is an attributed research finding, not a statement about wine style.
Plantgrape describes this vigorous variety as sensitive to coulure, with clonal selection having greatly reduced that defect, and fairly sensitive to winter frosts in the first years after planting. UC Davis FPS traces its French and California history. These descriptions are not a frost-risk assessment for any individual site.
Reference review · November 9, 2026
INRAE / IFV cultivar reference. Vine-trait observations belong to this reference's context; they are not universal planting or irrigation recommendations.
Independent institutional history used to cross-check cultivar identity and geographic context. It does not independently validate every agronomic observation in Plantgrape.
Cultivar descriptions are source-attributed reference material, not site prescriptions. No numeric soil-moisture threshold, disease diagnosis, regional suitability guarantee or GroundWorx performance claim is established here.