RS-9
ActiveVitis L. · Grapevine
UNIVERSITY OF CALIFORNIA KEARNEY AGRICULTURAL CENTER
10 August 2026
The variety is a vigorous plant with hermaphroditic flowers and well-ripening vines. The maturity period ranges from 135 to 150 days. Large conical clusters, averaging 800 g, can reach up to 1.5 kg. Round or slightly oval berries have a mass of 4–7 g, dense fleshy pulp, and firm edible skin of a burgundy color.
Flavor qualities are characterized as harmonious, with a sugar content of 14.5–20% and acidity of 6 g/l. The variety is intended for fresh consumption and drying; it possesses high resistance to cracking and the ability to be stored for up to 2.5 months.
The variety has low winter hardiness down to -15...-18°C and low resistance to downy mildew and powdery mildew, requiring regular protective treatments. High yield is maintained by compatibility with most rootstocks. To improve the marketability of the clusters, thinning and gibberellin treatment are used.
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Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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.
№ Ruby Seedless*ES x
№ EMPTY569
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 Rubilande, Rubilande Rs, Rubín, Rubinet, Rubinia, Rubinia N., Rubintos, Rublis, Ruby Cabernet, Ruby Pinot, Ruby Seedless N., Ruche' N., Rudava, Rudežuža, Rufete, Rufete Serrano Blanco, Rufete T, Ruggeri 140 K.M.1, Ruggine B., Rukatac