RS-9
ActiveVitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
10 August 2026
The variety belongs to the seedless group; the maturity period is 145–150 days. Vigorous vines require careful pruning to 6–10 buds and adaptive training. Clusters are conical, medium-dense, with a weight of 500–900 grams.
Berries are oval-cylindrical in shape with a color ranging from bright red to dark red. The flesh is firm and juicy; the skin is tough and edible. The variety is sensitive to downy mildew, powdery mildew, and black spot, requiring regular treatments.
Winter hardiness is -18 to -22 °C. The variety is thermophilic and requires a long warm season for full maturation. Under favorable conditions, clusters can be stored for up to 20 weeks.
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.
Variety registered as early as 2 jurisdictions, data for which we do not publish: their registry licenses have not yet been verified. This section will be available upon verification.
The variety is listed in the national registry — its seeds are authorized for sale in this country.
№ Crimson Seedless*ES x
№ 96/4041
№ 007114
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.
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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 Counoise N, Courbu B, Courbu noir N, Couston N, Coutia, Cove' B., Crâmpoșie aromată, Cramposie selectionata, Crato Espanhol B, Creață, Cristina, Crljenac, Crljenak, Crljenak Kaštelanski, Crljenak Viški, Črna rebula, Crnjenak, Crnka, Croatina N., Crouchen B