Black Summer
(F1) Green Seed
Product ID: 2460
Beautiful dark green pac choi.
Broad, flat, light green petioles are topped with oval, dark green leaves. Best for full size, but also suitable for mini heads. Slightly smaller in size (10-12") and a complement to the white-stemmed Joi Choi. Very slow bolting. Avg. 11,000 seeds/oz. Packet: 250 seeds.
https://www.johnnyseeds.com/vegetables/greens/pac-choi-bok-choy/black-summer-f1-green-seed-2460.11.html
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SCIENTIFIC NAME: Brassica rapa var. chinensis
CULTURE: Sow from early spring through midsummer. In the South, pac choi is well adapted for fall plantings. Sow 15 seeds/ft., 1/4" deep in 2" wide bands in rows 18" apart. Thin plants as recommended in our Pac Choi Comparison Chart. Harvest before flowering. For baby leaf, sow 60 seeds/ft. in a 2" to 4" wide band. Clip 4-5 week-old leaves.
PESTS: Flea beetles can be controlled by covering with floating row covers from day of sowing.
AVG DIRECT SEEDING RATE: For bunching: 830'/oz., 13,000'/lb. at above spacing. For baby leaf: 210'/oz., 3,300'/lb. at above spacing.
SEED SPECS: SEEDS/OZ.: Avg. 10,300.
PACKET: 250 seeds, sows 16' full-size, 4' baby leaf.
CULTURE: Sow from early spring through midsummer. In the South, pac choi is well adapted for fall plantings. Sow 15 seeds/ft., 1/4" deep in 2" wide bands in rows 18" apart. Thin plants as recommended in our Pac Choi Comparison Chart. Harvest before flowering. For baby leaf, sow 60 seeds/ft. in a 2" to 4" wide band. Clip 4-5 week-old leaves.
PESTS: Flea beetles can be controlled by covering with floating row covers from day of sowing.
AVG DIRECT SEEDING RATE: For bunching: 830'/oz., 13,000'/lb. at above spacing. For baby leaf: 210'/oz., 3,300'/lb. at above spacing.
SEED SPECS: SEEDS/OZ.: Avg. 10,300.
PACKET: 250 seeds, sows 16' full-size, 4' baby leaf.
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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
- Heat Tolerant
- Johnny's Exclusive
- 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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