Brassica rapa Pekinensis group
Osaka Shirona is loose-head variety of Chinese cabbage. These Japanese greens grow mild-tasting medium-sized bright green leaves with wide and firm white petioles or stocks. It is a fast-growing variety that is tolerant to both cold and heat. In frost-free areas it can be sown all year long, but avoid planting in the middle of a hot summer. Traditionally, leaves were dried or pickled to provide nutritious greens during winter months.
- Cool season annual
- Approx. 700-900 seeds in packet. (A seed will vary in weight and size within a given seed lot. The number of seeds stated is only an estimate.)
- 21,000 seed count per pound.
- Maturity: Approx. 40-60 days
- Planting season: Spring or late summer/early fall
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Cultivation: Chinese cabbage prefers cool temperatures for its main growing season. Prepare fertile, well-drained soil. In temperate areas sow seeds in spring/summer after last frost or late summer/early fall. Plant year round in tropical areas. Keep soil moist. Fertilize as needed. Exposure to frost or prolonged temperatures below 50°F may result in bolting. Harvest at any stage.
Note: Chinese Cabbage requires vernalization. Bud differentiation and bolting results from low temperatures of 41°F for a week or 50°F for two weeks. For spring harvest, transplant seedlings with 5-7 true leaves raised at 73-75°F during the day and over 53°F at night. Providing plants with adequate water and fertilizer after transplanting will promote faster growth.
Please note: Maturity, adaptability and disease tolerance may differ under your specific climate and/or growing conditions.
Culinary tips: Popular in Japanese soups and braised with meat in sukiyaki. Used in yosenabe, ohitashi, stir-fry, pickling and salad.