Seed Swaps

Cabbage 'Mammoth Red Rock'   

Brassica oleracea (Capitata Group)

  • 18 plantings
  • 6 available for swap
  • 1 wanted
  • 26 stashed

Mammoth Red Rock is a popular variety of Cabbage, which belongs to the Mustard genus (Brassica oleracea (Capitata Group) 'Mammoth Red Rock'). Mammoth Red Rock is a heirloom variety. When ripe, fruit appear in these approximate colours:   UA red and   Debian red.

Red head heirloom from 1889, ready in 90 days.

This variety is an Vegetable that typically grows as an Annual/Perennial, which is defined as a plant that can matures and completes its lifecycle over the course of one year or more. Mammoth Red Rock is known for growing to a height of approximately 30.0 cm (11.7 inches).

As Mammoth Red Rock Cabbage is a low maintanence plant, it is great for beginner gardeners and those that like gardens that don't need much overseeing.

This variety plant info is provided by the myfolia gardener's wiki. All details about Mammoth Red Rock have been kindly provided by our members.

How to grow Mammoth Red Rock

  • Full Sun

  • Medium

Try to plant in a location that enjoys full sun and remember to water moderately. Keep in mind when planting that Mammoth Red Rock is thought of as hardy, so this plant will survive close to or on freezing temperatures. Ensure your soil has a ph of between 6.0 and 7.5 as Mammoth Red Rock is a weakly acidic soil - weakly alkaline soil loving plant.

Growing Mammoth Red Rock from seed

Try to aim for a seed spacing of at least 3.12 inches (8.0 cm) and sow at a depth of around 0.47 inches (1.2 cm). Soil temperature should be kept higher than 4°C / 39°F to ensure good germination.

By our calculations, you should look at sowing Mammoth Red Rock about 45 days before your last frost date.

Transplanting Mammoth Red Rock

Ensure that temperatures are mild and all chance of frost has passed before planting out, as Mammoth Red Rock is a hardy plant.

Harvesting Mammoth Red Rock