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Mammoth Red Rock Cabbage Seed-Cabbage Seed-Heirloom Seed Supply

Mammoth Red Rock Cabbage Seed

Regular price $2.85 $2.00 Sale

Mammoth Red Rock Cabbage Seed is an (100 days) open-pollinated heirloom. A large late storage cabbage with firm flattened round 5–8 lb heads, 8–10" across and red-purple to the core. Rated as a good keeper with a crisp sweet taste.

This favorite goes back to 1889. Vaughan in 1904 called it “the surest heading red cabbage ever introduced.” R.B. Dunning & Co. of Bangor, ME, sold a packet for a nickel and an ounce for 35¢ in 1936. 100+ seed per pack.

83% germination.


Cabbage Culture: Blue-purple foods such as red cabbage and purple cauliflower contain anthocyanins and phenolics, which benefit the urinary tract, memory and immune system.Exposure to hoarfrost is good for cabbages. They double their sugar content after one month of cold. Red cabbage seedlings are often used for microgreens.

Minimum germination soil temperature 40°, optimal range 55-95°, optimal temperature 77°. Emergence takes 5 days at 77°.

Days to maturity are from direct seeding. Subtract 20 days from date of transplanting.

Note: We cannot ship packets greater than ½ oz. (14 grams) of any Brassica into the Willamette Valley. The State of Oregon prohibits shipping any commercial quantity of untreated Brassica, Raphanus or Sinapis because of a quarantine to control Blackleg.