RS-9
ActiveVitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
10 August 2026
The variety is the result of breeding work at the Geilweilerhof center. Genetically, it is a derivative of the Müller-Thurgau, Riesling, and Silvaner varieties and was also used in the breeding of the Orion variety. It is known by the synonyms Geilweilerhof 33-13-113 and Optima.
The plant is early-maturing and characterized by late bud break, which protects it from spring frosts. The variety is able to adapt to poor soils while maintaining a high level of sugar accumulation. The grapes are used in the production of wines that may exhibit aromas of pear and lime blossom, while the variety is characterized by low acidity.
Currently, the variety is grown in small volumes, as its popularity in German regions such as Rheinhessen and Mosel has declined since the 1990s due to changing market priorities in the winemaking industry.
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.
№ Optima 113*DE 4550
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 Ondarraba Beltza, Ondarrabi Zuri, Ondenc B, Onyx, Opál, Opalor, Oporto, Opsimo Edessis B, Opsimo Prossotsanis B, Opsimo Soufliou B, Ora B, Orbois B, Orellis, Orion, Ormeasco, Orpheus, Orpicchio B., Orsi, Ortega, Ortilieber Gelber