Daucus carota 'Black Nebula'

RHS Plant Profile
carrot 'Black Nebula'

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Annual Biennial

An annual, deciduous vegetable to around 30cm in height, and the darkest coloured variety available. It produces long, tapering black-purple roots which retain their colour even when cooked, with a crunchy texture and earthy flavour. Perfect steamed, raw in salads or even as an ingredient for a healthy, dark purple smoothie. Sow end of March to June, harvest August to November

Position

Full sun

Soil Types

Clay, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1 year
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

Clay Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
South–facing or West–facing
Exposure
Sheltered
Hardiness

Hardiness Ratings

All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

  • H1A: under glass all year (>15C)
  • H1B: can be grown outside in the summer (10 - 15)
  • H1C: can be grown outside in the summer (5 - 10)
  • H2: tolerant of low temperatures, but not surviving being frozen (1 to 5)
  • H3: hardy in coastal and relatively mild parts of the UK (-5 to 1)
  • H4: hardy through most of the UK (-10 to -5)
  • H5: hardy in most places throughout the UK even in severe winters (-15 to -10)
  • H6: hardy in all of UK and northern Europe (-20 to -15)
  • H7: hardy in the severest European continental climates (< -20)
H4

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Apiaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus
Daucus are more commonly known as wild carrot, a group of herbaceous, biennial (although not always) plants which can reach a height of between 30 to 60cm. The triangular shaped leaves are tripinnate, divided and lacy and flowers begin in pink buds, opening into small and white clustered together in dense umbels. The fruit is small, hairy and lumpy.
Name Status
Accepted

How to Grow

Cultivation

Grow in a deep, fertile, well drained soil in full sun; do not sow in soil that has been manured within the previous year. For more advice see carrots cultivation

Propagation

Propagate by seed. See sowing vegetable seeds

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants

Pruning

No pruning required

Pests

May be susceptible to carrot root fly and aphids

Diseases

May be susceptible to root rot, Sclerotina diseases and powdery mildews