Grand Slam
ActiveBrassica oleracea L. (White Cabbage Group) · White cabbage
Yusuke KATO, JP
Brassica oleracea L. (White Cabbage Group) White cabbage · Vegetables
also searched as: портланд
10 August 2026
The hybrid forms compact plants with green leaves and round heads with a dense internal structure. The maturation period is 55–60 days after transplanting. The head weight varies between 0.8–1.5 kg.
The plant possesses resistance to bolting, moderate tolerance to hot conditions, and intermediate resistance to Fusarium wilt caused by Fusarium oxysporum f. sp. conglutinans. The hybrid is intended for sale in the fresh produce market.
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.
№ B8827
Records are sourced from official registry publications. Data sources and legal status
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Nearby in the species list Polaris, POLARIS F1, Poldark, Polestar, Polina, Polinius, Polka, Pomme plat de paris, Pontiac, Pontic, Porto, Portoza, Potomak, Pourovo polopozdní, Pourovo pozdní, POVOA AMARELA, Powerslam, Prebor, Précoce de Louviers, Precocissimo conico