RS-9
ActiveVitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
10 August 2026
The variety is a wine grape; the vines have medium vigor, which increases on fertile soils when grown on their own roots. Leaves are medium to large, three- or five-lobed. Flowers are hermaphroditic. Clusters are medium, cylindrical-conical, often winged, and vary from medium-dense to dense.
Berries are medium, round, white-yellow, with a thick skin and juicy, fleshy pulp with a neutral flavor. Technical maturity occurs in the second half of September. The variety provides high yields; sugar content is 17–22%, and titratable acidity is 7–9 g/l.
The variety has medium resistance to fungal diseases, requiring at least three preventive treatments per season, and is relatively drought-tolerant. Frost resistance is weak. Due to high acidity, wines from this grape are an excellent base for distillation.
1 jurisdiction
Green indicates countries where the variety is listed in the national catalogue and its seeds are authorized for sale. Expired registrations are marked separately: the variety was previously admitted, but sale is no longer permitted.
The variety is listed in the national registry — its seeds are authorized for sale in this country.
№ Ugni Blanc*ES x, CY 1, HR x, BG 28
Records are sourced from official registry publications. Data sources and legal status
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Same species
Vitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
Vitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
Vitis L. · Grapevine
David W.Cain
Vitis L. · Grapevine
Vitis L. · Grapevine
Vitis L. · Grapevine
Nearby in the species list Johanniter, Joubertin, Juan García, Juan Ibáñez, Jubileum 75, Juhfark, Juhfark B.M.1, Juhfark B.M.2, Júlia, Julski biser, Jurançon blanc B, Jurançon noir N, Juwel, Kabar, Kaćadebić, Kadarka, Kadarka K.M.1, Kadarka Kt.3, Kadarka Kt.4, Kadarka P.111