Red Giant Mustard Seeds (Organic)

Red Giant Mustard, also known as 'Ruby Streaks,' is a vibrant and flavorful leafy green prized for its bold foliage and peppery taste. Originating from Japan, this mustard variety boasts stunning, deeply serrated maroon leaves with bright green veins, creating a visually striking addition to gardens. In terms of taste, Red Giant Mustard offers a zesty, spicy flavor with hints of horseradish. Its peppery kick intensifies as the leaves mature. These flavorful greens are versatile in culinary use, adding depth to salads, sandwiches, stir-fries, and as a garnish for various dishes.

Variety Details

• Plant type: Hardy Annual
• Growth habit: Herbaceous
• Crop category: Cabbage
• Kitchen profile: Red Giant Mustard, also known as 'Ruby Streaks,' is a vibrant and flavorful leafy green prized for its bold foliage and peppery taste.
• Recorded feature: Open-Pollinated
• Product format: Seed packet

Sowing & Growing

• Maturity: The plant matures relatively quickly, typically reaching harvestable size within 40-50 days from sowing.
• Light: Full Sun/Part Sun
• Planting season: Fall or Spring
• Starting location: Direct Sow or Start Indoors & Transplant
• Recorded soil pH: 6.1 - 6.5 or 6.6 - 7.0 or 7.1 - 7.5

Schedule Red Giant Mustard for the cool-season planting window appropriate to your climate. Start seed in a protected setting or direct sow when the product record allows, then thin or transplant so each plant has room to develop. Check moisture at root depth and adjust irrigation to weather and soil rather than a universal schedule. As maturity approaches, inspect head, stem, or leaf development according to the crop type and harvest at the preferred size and firmness.

Before sowing Red Giant Mustard, review the packet alongside the current product details and note any range in temperature, germination, or maturity. Ranges reflect biological and seasonal variation rather than a fixed promise. Label each planting with its date and location, then compare emergence, growth, and harvest with local weather. This record is useful for succession plantings and for deciding whether the crop fits better into an earlier or later seasonal window.

Explore related options in our Greens Seeds.