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Botanical Interests

Red Giant Mustard Seeds

Red Giant Mustard Seeds

Regular price $2.69
Sale price $2.69 Regular price
~1.5 g (~503 seeds)
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Product Details

Big, bold, maroon leaves with lime veins are as delicious as they are ornamental in the garden or a container. Excellent pickled, wilted, or raw in salads, 'Red Giant's' mustard flavor intensifies in older leaves and hot weather, providing hints of horseradish. This traditional Asian green is faster growing and spicier than traditional southern mustards. Cold tolerant and bolt resistant.

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  • Variety Info
  • Sowing Info
  • Growing Info

Variety Info

Days to Maturity: 40 days

Family: Brassicaceae

Native: Widespread, probably Asia

Hardiness: Frost-tolerant annual

Exposure: Full sun to part shade

Plant Dimensions: 12"–24" tall

Variety Info: Slightly savoyed, purplish-red, thick and tender leaves, in a loose head. Spicy, rich horseradish flavor intensifies with heat and as leaves get larger. 'Red Giant' can be used when very young and small, or more matured. It is particularly tolerant to cold and bolting, and has wide soil adaptability.

Attributes: Good for Containers, Heat Tolerant, Frost Tolerant

Sowing Info

When to Sow Outside: RECOMMENDED. 4 to 6 weeks before your average last frost date, when soil temperature is at least 40°F, ideally 60°–75°F. Successive Sowings: Every 3 weeks until 10 to 12 weeks before your average first fall frost date for continuous harvest. Mild Climates: Sow in late fall through winter for cool–season harvest.

When to Start Inside: Not recommended; transplant stress can cause plants to bolt (prematurely flower).

Days to Emerge: 5–10 days

Seed Depth: ¼"

Seed Spacing: A group of 3 seeds every 4" – 6"

Row Spacing: 12"–18"

Thinning: When 3" tall, thin to 1 every 4" – 6"

Growing Info

Harvesting: Harvest in the morning if possible. You may start harvesting leaves when they are 2" tall, as needed; remove no more than 1/3 of the plant if regrowth is desired, or let plant grow to maturity and harvest entire plant. Late summer crops will last until the first hard freeze.

5.0
Rated 5.0 out of 5 stars
Based on 12 reviews
Total 5 star reviews: 12 Total 4 star reviews: 0 Total 3 star reviews: 0 Total 2 star reviews: 0 Total 1 star reviews: 0
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12 reviews
  • Giulia F.
    Rated 5 out of 5 stars
    Apr 26, 2025
    5 Stars

    In my family we eat a lot of greens, such as endive, chicory, chard, etc. Since we planted our mustard we have a great substitute, and we always let it flower to save the seeds. It grows fast, is tasty and has a nice purple color. Butterflies like it as much as we do, so they leave their eggs, but it's no great loss we can share.

  • Nancy
    Rated 5 out of 5 stars
    Oct 28, 2024
    5 Stars

    This is my first time growing mustard in my fall/winter garden in Atlanta. I don't personally like the taste of mustard greens so I leave these Red Giant mustard leaves as an ornamental backdrop to Botanical Interests Olesh Tres Fine Endive which is growing in the foreground - and I love to use in salads.

    Which best describes you as a gardener? Beginner
  • pascal a.
    Verified Buyer
    Rated 5 out of 5 stars
    Mar 2, 2024
    5 Stars

    As you can see from the picture, these Red Giant Mustards grew incredibly well here in CA, zone 9b. They're taking over my entire bed. I started them in late fall and they grew enormous throughout the entire winter! I can't even keep up with harvesting them. I'm swimming, no wait, drowning in Mustard leaves! Help!!!

    Which best describes you as a gardener? Intermediate
  • Darryl G.
    Rated 5 out of 5 stars
    Feb 4, 2024
    5 Stars

    I enjoyed growing this plant. It's very easy and quick to grow, and quite ornamental. I first tried to cook it in the traditional Southern way- stewed with seasoning pork and onions. Unfortunately, it's not suited to that cooking method, but it's great sautéed, in salads, and in sandwiches. I live on the Texas coast, and the attached photo was taken in mid-June, so it can take some heat without bolting.

    Which best describes you as a gardener? Intermediate
  • Asa P.
    Rated 5 out of 5 stars
    Jan 10, 2024
    5 Stars

    beautiful and dilicious

    Which best describes you as a gardener? Intermediate
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    Epic Gardening
    Jan 15, 2024

    Hey Asa, WOW, WOW, WOW! You have quite the green thumb! Your mustard greens look amazing! Thank you so much for sharing your photo with us! Keep on growing 🌻️