Grand Slam
ActiveBrassica oleracea L. (White Cabbage Group) · White cabbage
Yusuke KATO, JP
Brassica oleracea L. (White Cabbage Group) White cabbage · Vegetables · bred by PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.
also searched as: йаспер
10 August 2026
The variety forms dense round heads weighing up to 5 kg with a light cream internal structure. Outer leaves have a gray-green color and a strong waxy bloom. The hybrid is distinguished by a lack of tendency for head cracking.
The plant possesses high tolerance to damage by thrips, Alternaria, and downy mildew, as well as increased drought resistance during the seedling stage. When growing, a planting density of 30–40 thousand plants per hectare is recommended, following a 67 by 50 cm layout.
2 jurisdictions
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.
№ 255119
№ R W3755
The right is granted for a limited term: propagation of the variety requires a license from the rights holder.
Records are sourced from official registry publications. Data sources and legal status
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Nearby in the species list It-13, ITALA, Ixon, Ixxion, Ixxion F1, Izalco, Izidor, Jadwiga, Jaguar, Jason, Jåtunsalgets sommerkål, JERSEY WAKEFIELD, Jersey Wakefield del, JERSEY WAKEFIELD 'PEWA', Jetma, Jetma F1, Jetodor, Jetodor F1, Joanna, Jõgeva