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Annual Biennial

Brassica oleracea (Capitata Group) 'Duncan'

cabbage 'Duncan'

A very versatile, fast growing traditional hearted cabbage variety with an upright and compact habit that makes it perfect for small spaces or container growing. It can be harvested from March for tender Spring greens or in June for full hearted Spring cabbages

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
1 year
Ultimate spread
0.1–0.5 metres
Growing conditions
Sand
Loam
Chalk
Moisture
Well–drained
pH
Neutral, Alkaline
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer
Autumn Green
Winter Green
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H5
Botanical details
Family
Brassicaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus

Brassicas can be annual, biennial or perennial plants, most are upright with alternate, often glaucous leaves, long taproots and clusters of cross-shaped, yellow or white flowers. The genus includes a number of species bred to produce food crops, such as cabbages, turnips, mustards and oilseed rape, as well as others grown for their ornamental value

Name status

Accepted

How to grow

Cultivation

Grow in fertile, moist but well drained soil in full sun. Sow direct between September and October at a depth of 1cm and 30cm between rows. See vegetable cultivation

Propagation

Propagate by seed. See sowing vegetable seeds

Suggested planting locations and garden types
  • Patio and container plants
Pruning

No pruning required

Pests

May be susceptible to birds, cabbage caterpillars, cabbage gall weevil, cabbage root fly, cabbage whitefly, cutworms, flea beetle, mealy cabbage aphid, slugs and snails, swede midge

Diseases

May be susceptible to black rot, club root, downy mildew, foot and root rot, leaf spot, white blister

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