Vegetables Greens

Red Giant
Organic Mustard Green Seed

Product ID: 2884

Very slow bolting, broadleaf mustard.

Purple-tinted leaves with gently scalloped margins. Plant densely so leaves remain a proper size for baby leaf and petioles elongate for easy harvest. Somewhat spicy mustard flavor. USDA Certified Organic. Avg. 16,400 seeds/oz. Packet: 250 seeds.


In Stock

1 Ounce

In Stock

1/4 Pound

In Stock

1 Pound

In Stock

5 Pounds

In Stock

25 Pounds

Estimated Availability Mar 30, 2022
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SCIENTIFIC NAME: This growing information is for baby-leaf production of the following Brassicas, including baby mustard greens, mizuna, tatsoi, and komatsuna: Brassica carinata, B. juncea, B. napus ('Red Russian'), B. oleracea ('KX-1' and 'Russian Royale'), B. rapa, B. rapa var. chinensis ('Tokyo Bekana' and 'Rosie'), B. rapa var. japonica, B. rapa var. narinosa ('Tatsoi'), B. rapa var. perviridis ('Green Giant').
CULTURE: Brassicas prefer soil with a pH of 6–7.5 and can be grown all season in the field. Most varieties are hardy enough to grow in cool greenhouses and high tunnels during winter from late summer and early fall sowings.
DAYS TO MATURITY: From emergence after direct seeding.
DIRECT SEEDING: Sow ¼" deep at 3–5 seeds/inch, in rows at least 2" apart from early spring into midsummer. Can be sown into late fall if overwintering in a high tunnel or other protected structure.
RECOMMENDED JANG SEED ROLLER (baby leaf): Mustard, Mizuna, Pac Choi, Tatsoi: Y-24 or X-24; Chinese Cabbage, Kale, Komatsuna: X-24 or F-24. (Where multiple rollers are recommended, choosing a roller with a larger hole will increase the number of plants per inch. This creates longer petioles and somewhat slower-growing, narrower leaves for an extended baby leaf harvest. It will also wash out color, hasten bolting, and increase the need for water and fertility. Choosing what works best for your system may take some trialing and adjustment.)
SUCCESSION PLANTING: For a continuous supply, sow about every 2 weeks.
DISEASES & PESTS: Control flea beetles by applying fabric row cover at time of sowing and/or applying insecticides such as azadirachtin or pyrethrin. Cabbage worms and loopers can be controlled with Bacillus thuringiensis (Bt). Prevent disease with crop rotation and sanitation.
HARVEST: Harvest with a knife when leaves reach desired size, about 3–6". Make sure to cut above the basal plate for cut-and-come-again harvests. Cut again when plants are at desired size, 5–14 days depending on variety and season.
AVG. SEEDING RATE: For Mizuna, Tatsoi, Komatsuna, and Pac Choi: 1 oz./210', 1 lb./3,300'. For Kale: 1,000 seeds/16', 1 oz/115', 1 lb./1,840'. For Mustard: 1 oz./260', 1 lb./4,160'.
SEED SPECS: Mustard: Avg. 16,200/oz.; Mizuna, Tatsoi, Komatsuna: Avg. 12,650/oz.; Pac Choi: Avg. 10,300/oz.; Kale: Avg. 7,750/oz.
SIZED SEEDS: Kale seeds are sized except where noted.
PACKET: 250 seeds, sows 4'. For Kale: 100 seeds, sows 1½'.

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Quick Facts


Latin Name

Brassica juncea

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.

21 baby; 45 full size

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).


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.

Open Pollinated

Product Features

Heat Tolerant Heat Tolerant
Heat Tolerant
Organic Seeds, Plants, and Supplies Organic Seeds, Plants, and Supplies
Plants, or seeds harvested from plants, that have been grown without synthetic fertilizers or pesticides, strictly adhering to the USDA's National Organic Standards Board (NOSB) organic gardening practices are designated as Organic.

Supplies that meet the USDA's National Organic Program (NOP) rules according to a third-party authority such as OMRI, WSDA, and/or a local authority such as MOFGA or NOFA.
Hydroponic Performer 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.

Organic Seeds, Plants, and Supplies Hydroponic Performer Heat Tolerant