RS-9
ActiveVitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
10 August 2026
Trebbiano Forte is not an independent variety. It is a historical name (synonym) for the Trebbiano Toscano variety, which is known in France as Ugni Blanc. The origin of the variety is presumably Mediterranean or Etruscan.
The variety is classified as technical (wine). It is characterized by a medium to late ripening period and is used to create dry white wines with pronounced acidity, as well as for distillation. The variety is susceptible to flower abortion and millerandage during cool and wet weather during the flowering period.
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
The directory replicates the primary source. If an entry differs from the official publication, please specify the discrepancy and provide a link if possible. Corrections are added to the moderation queue.
This is a directory, not an official registry: data is based on public disclosures and may have changed. More about sources
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 Trasonia, Trbljan, Trebbianina B., Trebbiano, Trebbiano*, Trebbiano Abruzzese B., Trebbiano Di Lugana, Trebbiano di Soave, Trebbiano Di Soave B., Trebbiano Fiorentino, Trebbiano giallo B., Trebbiano Modenese B., Trebbiano Romagnolo B., Trebbiano Spoletino B., Trebbiano Toscano, Trebbiano toscano B., Trebbianolli, Trebbianone, Treixadura, Trepadell