50-55 Days to maturity. Brassica rapa var Pekinensis 'Mini Kisaku 50'. Mini Kisaku 50 Hybrid Chinese Cabbage Seeds. Annual Hybrid. This unique Michihili-type cabbage is a mini hybrid that develops 2-3 pound compact heads with a yellow core. Because it is a Michihili-type you can expect to see better stress tolerance compared to other varieties. Enjoy this crisp and tender variety in your favorite salads, soups, stir-fries, or traditional dishes like sukiyaki, yosenabe, and ohitashi. For use beyond the season pickle for storage. ~ 11,400 seeds per oz.