60-70 Days to maturity. Brassica rapa Pekinensis 'Mini Napa #2'. Mini Napa #2 Chinese Cabbage Hybrid Seeds. Annual Hybrid. Mini Napa #2 is the smallest Chinese Napa cabbage used by commercial growers because it is slow bolting and uniform. You can expect your mini cabbage to be about 3-4 pounds with green leaves and a yellow center. Use this cabbage to add some color and freshness to your favorite summer salads. Approximately 8625 seeds per ounce.