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Brassica rapa (Pekinensis Group) 'Spectrum' (Chinese cabbage 'Spectrum')

Other names: Napa cabbage 'Spectrum'

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Variety or Cultivar
'Spectrum' is an annual or biennial grown as a cool season vegetable crop with a dense, conical rosette of thick, fleshy, edible, grey-green leaves with white veins, ready for harvest in late summer.
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Season of interest

Flower

Spring Summer Autumn Winter
Flower

Foliage

Spring Summer Autumn Winter
Foliage
Height and spread

Height and spread

Size Max height Max spread To maturity
0.25 m 0.4 m 1-2 years
0 ft 1 ft 1-2 years

Where to grow

Soil type
  • Loamy
  • Sandy
Soil drainage
  • Well-drained
Soil pH
  • Alkaline
  • Neutral
Sunlight
  • Full Sun
Aspect
  • West
  • South
Exposure
  • Sheltered

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Additional plant details

Cultivation

Plant in prepared, well-compacted, non-acidic soil in sun in summer. Plant in an area vacated by non-brassica crop. Water regularly to avoid bolting.

Suggested uses

Beds and borders, Flavouring food and drinks, Add to salads

UK hardiness

H3

USDA zones

Sunset zone

WUCOLS

North-Central Coastal = Unknown
Central Valley = Unknown
South Coastal = Unknown
South Inland = Unknown
High and Intermediate Desert = Unknown
Low Desert = Unknown

Foliage

Deciduous

Habit

Upright, Rosette

Drought tolerant

No

Flood tolerant

No

Toxicity

Not toxic

Plant care

Pruning

Ready to harvest 30 days from sowing for baby leaf or up to 75 days for mature heads.

Propagation methods

Seed

Propagation

Sow in situ from early spring to midsummer. Suitable for autumn planting in areas with mild winters. Thin seedlings to 10cm for baby greens, 30cm for mature plants.

Pests

Cabbage caterpillars

Cabbage whitefly

Flea beetles

Slugs

Snails

Mealy cabbage aphid

Chafer grubs in lawns

Cutworms

Cabbage root fly

Cabbage gall weevil

Swede midge

Cabbage stem flea beetle

Diamond-back moth

Birds

Diseases

Grey mould

Leaf spot

White blister

Clubroot

Downy mildew

Foot and root rot

Black rot

Hoe around crops

Dig next year's bed over in autumn adding manure or compost

Add lime to acid soil

Sow pak choi seeds

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Plants in this Genus (180)

Brassica

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Brassica napus (Napobrassica Group) 'Marian' Swede 'Marian'
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Brassica oleracea (Italica Group) 'Ironman Calabrese 'Ironman'
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Brassica oleracea (Botrytis Group) 'All Year Round' Cauliflower 'All Year Round'
Brassica oleracea (Botrytis Group) 'Aviron'
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Brassica oleracea (Botrytis Group) 'Aviron' Cauliflower 'Aviron'
Brassica oleracea (Italica Group) 'Bordeaux'
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Brassica oleracea (Italica Group) 'Bordeaux' Broccoli 'Bordeaux'
Brassica oleracea (Gemmifera Group) 'Bitesize'
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Brassica oleracea (Gemmifera Group) 'Bitesize' Brussels sprout 'Bitesize'
Brassica oleracea (Gemmifera Group) 'Brigitte'
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Brassica oleracea (Gemmifera Group) 'Brigitte' Brussels sprout 'Brigitte'
Brassica oleracea (Gemmifera Group) 'Brilliant'
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Brassica oleracea (Gemmifera Group) 'Brilliant' Brussels sprout 'Brilliant'
Brassica oleracea (Gemmifera Group) 'Clodius'
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Brassica oleracea (Gemmifera Group) 'Clodius' Brussels sprout 'Clodius'
Brassica oleracea (Gemmifera Group) 'Cromwell'
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Brassica oleracea (Gemmifera Group) 'Cromwell' Brussels sprout 'Cromwell'
Brassica oleracea (Gemmifera Group) 'Wellington'
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Brassica oleracea (Gemmifera Group) 'Wellington' Brussels sprout 'Wellington'
Brassica oleracea (Capitata Group) 'Kilaxy'
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Brassica oleracea (Capitata Group) 'Kilaxy' Cabbage 'F1 Kilaxy'
Brassica oleracea (Italica Group) 'Summer Purple'
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Brassica oleracea (Italica Group) 'Summer Purple' Sprouting broccoli 'Summer Purple'
Brassica oleracea (Italica Group) 'Autumn Spear'
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Brassica oleracea (Italica Group) 'Autumn Spear' Broccoli 'Autumn Spear'
Brassica oleracea (Italica Group) 'Claret'
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Brassica oleracea (Italica Group) 'Claret' Broccoli 'Claret'
Brassica oleracea (Italica Group) 'Green Magic'
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Brassica oleracea (Italica Group) 'Green Magic' Broccoli 'Green Magic'
Brassica oleracae (Italica Group) 'Green Sprouting'
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Brassica oleracae (Italica Group) 'Green Sprouting' Sprouting broccoli 'Green Sprouting'
Brassica oleracae (Italica Group) 'Purple Sprouting'
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Brassica oleracae (Italica Group) 'Purple Sprouting' Sprouting broccoli 'Purple Sprouting'
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