- Originally introduced by the Danish H. Hartman & Co. in 1909 this cabbage forms the largest early round headed cabbage that is ready in the summer.
65 to 75 days. The Copenhagen Market cabbage was produced in Denmark and brought to America in 1909. It is a hardy plant that can be grown in climate zones three through nine. The plant produces medium sized, green heads that can liven up any dish. After about sixty five to seventy five days, the heads will be ready to be harvested. They provide a sweet and delicate flavor.