See under Old plants.
Common name in Switzerland (french: vieux plants) for the mostly very old autochthonous grape varieties, which are cultivated mainly in the canton of Valais (french: Valais). Some of them come from the Italian region of Aosta Valley, which lies over the border, and some are also cultivated there. The two areas form a cross-border geographical island with a large common pool of grape varieties. Many of these grape varieties form individual groups with kinship links that have developed over centuries. The sometimes very close genetic links are due to...