The variety belongs to the species Brassica oleracea (Savoy cabbage group). The variety name translated from Dutch means "Iron Head". In genetic resource documentation, this variety appears as classic breeding material, not as a modern hybrid.
It is characterized as an early-maturing variety with heads weighing about 2.5 kg. It possesses pronounced cold hardiness. It is traditionally used in cooking for preparing soups, cabbage rolls, and salads.
Detailed agronomic indicators, such as precise plant height or specific disease resistance based on official trial results, are presented to a limited extent in academic publications.
Sources3
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Countries of admission
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.
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