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Mammoth Red Rock Cabbage Seeds

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Mammoth Red Rock Cabbage

SKU: CB4-100

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Country Of Origin: USA USA

Availability: In stock

Price: $2.50

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95 days. Brassica oleracea. Open Pollinated. Mammoth Red Rock Cabbage. The plant produces flavorful heads of red cabbage. The heads average 8 to 10 inches in diameter and weigh 5 to 8 lbs. It is red throughout and very flavorful. Excellent cooked, fresh in salads, or pickled. Stores well. An excellent choice for home gardens. An heirloom variety dating back to 1889. United States Department of Agriculture, NSL 5979. A variety from the USA.

Lot No: 102108

Germination: 85%

Test Date: 06/2025

Seeds Per Pound: 144,000

Plant Height: 12 to 14” tall

Planting Season: Spring/Fall

Sunlight Requirement: Full Sun/Partial Shade

Planting Method: Indoor Sow/Direct Sow

Cabbage Brassica oleracea

Seed Depth

Soil Temp. for Germination

Days to Germination

Sunlight Requirements

Planting Time

1/4 to 1/2"

70 F to 85 F

7 to 10 days

Partial Shade / Full Sun

Spring/Fall

USDA Hardiness Zone

Seed Spacing

Row Spacing

Space After Thinning

Days to Harvest

N/A

3 to 4"

36"

18 - 24"

55 - 85 days

Cabbage Planting Information:

Cabbage grows best when daytime temperatures are under 80°F. High fertility, improper water conditions, and heat can cause loose, puffy heads. Spring planting should occur as soon as soil can be worked, 3 to 5 weeks before the last frost, and fall planting done around June or July. Plants can grow 6 to 12" tall.

Soil Requirements:

Requires fertile soil in a well-drained location in the garden. Apply mulch, grass clippings, or straw around the base of the plant.

Water Requirements:

Maintain consistent moisture to prevent heads from cracking. Water on the sides of the plant and avoid wetting any part of the plant.

Fertilizer Requirements:

Use Slow Release (6 Month) Fertilizer when transplanting outdoors. Apply Miracle-Gro Liquid Fertilizer every two weeks.

Harvest Tips:

Cut heads with a sharp knife at ground level.

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Reimer seeds has over 5,000 quality vegetable, flower, and herb seeds for the home gardener and market growers. We do not sell any Genetically Modified seeds. This year we reduced our prices on many items, added new items, and have added additional bulk items by the ounce and pounds! Take time to review our impressive Online Seed Catalog. Sorry, we do not have a printed catalog to mail you. Plan your garden, and then order your varieties for this upcoming season. Please check back often, as we add new items regularly. If you don’t see an item you want you can always email us and we’ll see if we can bring it into stock!