Mei Qing Choi
(F1) Green Seed
Product ID: 509
For full or medium-size heads.
Flat, pale, misty-green stems form a thick, heavy base with broad, oval, rich green leaves. The compact, vase-shaped plant at full size is about 8–10" tall, but also well-formed at mini size when young. Good bolt, heat, and cold tolerance. Avg. 8,900 seeds/oz. Packet: 250 seeds.
https://www.johnnyseeds.com/vegetables/greens/pac-choi-bok-choy/mei-qing-choi-f1-green-seed-509.11.html
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CULTURE: Sow from early spring through midsummer. In the South, pac choi is well adapted for fall plantings. Suitable for fall sowing in mild climates or in a high tunnel or other protected structure in colder climates. Premature bolting of seedlings may occur if temperatures drop below 50°F (10°C), especially over multiple nights. Cold temperatures generally do not cause bolting of plants past the seedling stage.
DAYS TO MATURITY: From emergence after direct seeding.
DIRECT SEEDING: Sow 15 seeds/ft., 1/4" deep in rows 12-18" apart. Thin plants as recommended in our Pac Choi Comparison Chart. For baby-leaf production of 'Rosie', the only pac choi we recommend for baby leaf, see the Baby-Leaf Brassica Greens culture.
TRANSPLANTING: Start seeds in 128 or 72-cell trays, 2–4 weeks before transplanting. Plant out before plants become rootbound or stressed to prevent premature bolting.
INSECT PESTS: Flea beetles can be controlled by covering with floating row covers from day of sowing.
HARVEST: Harvest before flowering.
AVG. SEEDING RATE: For bunching: 830'/oz., 13,000'/lb. at above spacing.
SEED SPECS: SEEDS/OZ.: Avg. 10,300.
PACKET: 250 seeds. Full size: sows 16'; Baby leaf: sows 4'.
DAYS TO MATURITY: From emergence after direct seeding.
DIRECT SEEDING: Sow 15 seeds/ft., 1/4" deep in rows 12-18" apart. Thin plants as recommended in our Pac Choi Comparison Chart. For baby-leaf production of 'Rosie', the only pac choi we recommend for baby leaf, see the Baby-Leaf Brassica Greens culture.
TRANSPLANTING: Start seeds in 128 or 72-cell trays, 2–4 weeks before transplanting. Plant out before plants become rootbound or stressed to prevent premature bolting.
INSECT PESTS: Flea beetles can be controlled by covering with floating row covers from day of sowing.
HARVEST: Harvest before flowering.
AVG. SEEDING RATE: For bunching: 830'/oz., 13,000'/lb. at above spacing.
SEED SPECS: SEEDS/OZ.: Avg. 10,300.
PACKET: 250 seeds. Full size: sows 16'; Baby leaf: sows 4'.
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Quick Facts
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Latin Name
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Brassica rapa var. chinensis
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Days To Maturity
Average number of days from seeding date to harvest, within a specific crop group. If a transplanted crop: average number of days from transplant date. Not sure if crop is direct-seeded or transplanted? Check the Growing Information box for details. If crop can be both direct-seeded or transplanted, days to maturity refers to direct seeding. Days to maturity for all flowers and herbs is calculated from seeding date. -
45 Days
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Life Cycle
Plants can be Annuals (single growing season), Perennials (grow year after year), Tender Perennials (grow year after year in warmer climates; and in some cases when given special protection in colder climates), or Biennials (require two years to mature). -
Annual
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Hybrid Status
Hybrid: The offspring of a cross between two or more distinct parent lines, usually of same species, and selected for improved traits.
Open-pollinated: A non-hybrid variety that can reproduce itself in kind, demonstrating relatively stable traits from one generation to the next. -
Hybrid (F1)
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Product Features
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Heat Tolerant
- Heat Tolerant
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Hydroponic Performer
- Variety that can be grown successfully using hydroponic growing methods, such as NFT (Nutrient Film Technique), DWC (Deep Water Culture), or other soilless growing systems.
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