The Souvignier Gris is a fungus-resistant variety, crossed by Norbert Becker, and is to be found primarily in Steiermark. Its tendency toward abundant yields makes thinning-out of the grapes necessary.
Important ampelographic features:
Leaf: pentagonal with five lobes. Petiole closed to slightly overlapping
Grape cluster: medium large, loose to very loose grapes, cylindrical with small secondary wings; round to oval berries with red skin and a neutral flavour
Ripening: early to middle
Significance, conditions: Souvignier Gris is one of the PIWI-types – the fungus-resistant varieties – and is thus strongly resistant against oidium and Peronospora. Its loose foliage and robust grape skin also protect against rot in areas with copious rainfall.