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Growing instructions for Pak Choi

Germination temperature: 50 F to 80 F
Days to emergence: 4 to 7
Seed can be saved 4 years.

Maintenance and care:
While not as sensitive to heat and cold as Chinese cabbage, spring crops may bolt prematurely if young plants are exposed to frost or a week of nighttime temperatures below 50 F.
Wait until after last frost date to direct seed or transplant out. Start transplants inside 4 to 6 weeks before last frost date. Transplant 6 to 12 inches apart in rows 18 to 30 inches apart. Use the closer spacings for smaller varieties.

Plant direct-seeded spring crops 1/4 inch deep and about 1 inch apart in rows 18 to 30 inches apart. Thin to 6- to 12-inch spacings. Use thinnings in salads.

For fall crops, direct seed 1/4 inch deep in rows 18 to 30 inches apart in summer. Thin to 6- to 12- inch spacings. Or set transplants out at 6- to 12-inch spacings 4 to 6 weeks before first frost.
Mulch fall crops heavily and provide adequate moisture to avoid premature bolting.

Brassica chinensis. Sometimes referred to as Pai Tsai or white cabbage by oriental farmers. This is perhaps the most familiar of all the chinese greens - both the deep green leaves and white chunks of stem are a staple of Oriental restaurants. Bok Choy looks quite similar to white swiss chard. There are three basic varieties used

(a) Heavy-wide celery or chard- like white stalks at the outside of the plant, with tender, slimmer stalks at the center of the plant. This strain is fairly hardy and can be raised quite successfully in most parts of Canada and the U.S.A. (except Alaska or other long day length places) with about the same bolting problems as cauliflower or carrots. In other words, if the weather is terrible (too hot in the day and almost freezing at night - or very dry, followed by torrents of rain) it will bolt to seed.

(b) Fine white Chinese strain from the mainland this has a higher percentage of very fine celery-like stalks and is one of the staples of Cantonese dishes. Because it is almost tropical in nature, it will bolt to seed quite easily during North America's spring or early fall weather. Both the white and green fine strains should only be direct seeded, in late July for Sept. harvests. Long day length periods cause bolting. Earlier sowing or transplanting will bolt to seed.

(c) Fine green Chinese strain - developed in Taiwan as an alternate source to the fine white strain, which sometimes is very hard to obtain. All three strains have very tender stalks and heart - just like celery, but without the stringiness.

CULTURE: Sow heavy strains in late April and fine strains in late July. Do not transplant! Seeds should be sown thinly, 1/4 in./6 mm deep at 6 seeds per ft./31 cm Space rows 18 in./46 cm apart. Seeds germinate in 7 to 10 days. When seedlings are about 3 in./8 cm tall, thin to 6 in./15 cm. apart. These thinnings should not be thrown away - they make a great addition to spring or fall wok cooking! Fertilize frequently with light applications of 4-10-10.

HARVEST: should begin about 50 days from seeding when the plants are 10-14 in./25-35 cm high. The outside stalks are harvested repeatedly, just like leaf lettuce. The center stalk can be cut off or topped like broccoli to force more side shoots. Remember, long daylight periods will cause Bok Choy to flower immediately, so growing periods should be scheduled so that the main growth period occurs in early June or August. Bok Choy will tolerate just about any type of soil providing sufficient basic fertilizers are used. It does require ample moisture and all three types will bolt during very dry hot weather.

COOKING: The blanched inner heart or tender young inner stems are considered a delicacy. Outer stems are the most popular ingredient of Chow Mein and Chop Suey. Fresh Bok Choy will keep for about 5 days, if chilled.

Click here to buy GoodCentsVegetables Pac Choi Seeds ( only $0.95 per pack )
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