Darkmar 21 Brussels Sprouts Seeds (Organic)

Darkmar 21 Brussels Sprouts is a robust and productive variety known for its large, tender sprouts and reliable performance. Each plant grows tall, producing a long stalk lined with tightly packed, green sprouts that are sweet, mild, and perfect for roasting, steaming, or sautéing. Thriving in full sun and well-draining soil, Darkmar 21 matures in 90-100 days and performs best in cool weather, making it ideal for fall and winter gardens. The plants are cold-tolerant and can withstand light frosts, which enhance the flavor of the sprouts.

Variety Details

• Botanical name: Brassica oleracea
• Plant type: Biennial
• Growth habit: Upright
• Crop category: Cabbage
• Kitchen profile: Darkmar 21 Brussels Sprouts is a robust and productive variety known for its large, tender sprouts and reliable performance.
• Product format: Seed packet with a separately listed bulk option

Sowing & Growing

• Soil Temperature: 60-65°F
• Planting Depth: 1/4"-1/2"
• Germination: 6-10 Days
• Height At Maturity: 42"
• Days To Maturity: 180-260 Days
• Sun/Shade: Full Sun
• Spacing After Thinning: 18"-24"

Schedule Darkmar 21 Brussels Sprouts 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.

Regular harvesting encourages new growth and ensures a steady supply of fresh sprouts throughout the season.

This variety is adapted to routine garden care, making it a great choice for gardeners of all experience levels.

Darkmar 21 Brussels Sprouts are a delicious and flavorful addition to your garden, offering high yields and flavor.

Before sowing Darkmar 21 Brussels Sprouts, 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 Brussels Sprouts Growing Guide.