Darkmar 21 Brussels Sprouts Seeds (Organic)
Darkmar 21 Brussels Sprouts Seeds (Organic)

Darkmar 21 Brussels Sprouts Seeds (Organic)

Peaceful Valley

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Brussels Sprouts - Darkmar 21 - Brassica oleracea

Biennial Darkmar 21 is one of the most reliable, easy-to-grow open pollinated Brussels sprout varieties out there. Firm, sweet, dark green sprouts form on plants that grow to 3 ½ ft.

Did You Know? Brussels sprouts were first cultivated in large quantities in Belgium, hence the name.

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"
Approx Seeds per Pack: 25 Seeds


USDA Growing Zone: Certified Organic Product
Approximate Harvest Time : Early Winter
Approximate Harvest Time : Late Fall
Approximate Harvest Time : Late Winter
Growth Habit : Upright
Life Cycle : Biennial
Plant Family : Brassicaceae (Brassicas or Cole)
Planting Time : Summer
Seed Unit Sizes : Seed Pack
Soil pH : 6.6 - 7.0
Soil pH : 7.1 - 7.5
Starting Location : Start Indoors & Transplant
Sun Requirements : Full Sun/Part Sun

Planting & Care

Soil and Water: Brussels sprouts require fertile soil high in organic matter and nitrogen. They perform best with a pH of 6.5 and consistent moisture.

Planting and Growing: Best grown as a fall crop, start seeds indoors in June to set out transplants about 100 days before the first frost. Sow in flats and set out plants when then have 4-5 true leaves. When the lower sprouts are about 1 inch in diameter, remove the top most growing tip of the plant. This will allow the top sprouts to develop.

Harvesting and Storage: Allow the plants to be exposed to a frost, this will improve the flavor of the sprouts. Pick the sprouts when they are about an1-2 in size. The lowermost sprouts mature first.

Useful Information

PDF - Use Instructions


Peaceful Valley Farm & Garden Supply brand vegetable seeds are guaranteed to germinate. Once the seeds have sprouted, please understand that Peaceful Valley cannot be held responsible for the many uncontrollable growing and climatic conditions that must be met to ensure the success of your crop(s).

Peaceful Valley brand vegetable seeds are all non-GMO and Certified Organic.
Buy with confidence and plant the best!


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Customer Reviews

Based on 1 review
CARYN Frazier
Great Germination, Beautiful Seedlings!

The Darkmar 21 Brussels Sprouts had a wonderful germination rate for me, 11 of 12 seeds sprouted and the seedlings from these are beautiful in color and are doing great!

Darkmar 21 Brussels Sprouts Seeds (Organic)

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