Grand Slam
ActiveBrassica oleracea L. (White Cabbage Group) · White cabbage
Yusuke KATO, JP
Brassica oleracea L. (White Cabbage Group) White cabbage · Vegetables · bred by Kees Reinink
also searched as: 30 706
10 August 2026
The hybrid is early-maturing; the period from transplanting to harvest is 52–60 days. The plant is medium-sized and has an upright leaf rosette.
The heads are bright green in color, have a round or flat-round shape and medium density. The weight of a marketable head varies from 0.8 to 2.2 kg; the internal core is short.
The variety is resistant to bolting and cracking. Intended for spring cultivation in open field and protected cultivation with a planting density of 45,000 – 65,000 plants per hectare; suitable for fresh consumption.
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Variety registered as early as 1 jurisdiction, data for which we do not publish: their registry licenses have not yet been verified.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.
breeder code 30-706 RZ
A single variety may be registered in different countries under different names. All records are consolidated into one profile based on the breeder's code—an internal number that is identical for the variety across all registries.
The primary name shown is the one under which the variety is registered in the largest number of jurisdictions. Search finds the variety by any of its names.
The variety is listed in the national registry — its seeds are authorized for sale in this country.
№ 17096001
№ 73301
Records are sourced from official registry publications. Data sources and legal status
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Same species
Brassica oleracea L. (White Cabbage Group) · White cabbage
Yusuke KATO, JP
Brassica oleracea L. (White Cabbage Group) · White cabbage
SYNGENTA SEEDS B.V , NL
Brassica oleracea L. (White Cabbage Group) · White cabbage
Bejo Zaden B.V.
Brassica oleracea L. (White Cabbage Group) · White cabbage
Kees Reinink
Brassica oleracea L. (White Cabbage Group) · White cabbage
Kees Reinink
Brassica oleracea L. (White Cabbage Group) · White cabbage
Kees Reinink
Nearby in the species list 30-266 RZ F1, 30-294, 30-715, 30 717, 30-719, 30-725, 30-736, 30-737, 30-WC783, 30-WC784, 46A128 / Adige, 46AM03 / Green Light