Beta vulgaris 'Cardeal'

RHS Plant Profile
beetroot 'Cardeal'

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Annual Biennial

An excellent variety offered in conjunction with RBG Kew, specially bred for baby beet production. Smooth skinned, well shaped, red fleshed golf ball sized taproots are produced from June to October and are noted as having a particularly sweet flavour

Position

Full sun

Soil Types

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

Loam Sand
Moisture
Well–drained
pH
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)
H3

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Amaranthaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming
Genus
Beta can be annual, biennial or perennial plants, often with rosettes of basal leaves and thick, fleshy roots. The genus includes a range of wild species, as well as cultivated food crops such as beetroot, chard and sugar beet
Name Status
Accepted

How to Grow

Cultivation

Grow in fertile, well drained, alkaline soil in full sun. Dig over bed in autumn and add well rotted manure if humus content is low. Sow direct between March and July into drills 2.5cm deep and lighly rake over with soil. Thin out seedlings to 10cm spacings. See beetroot cultivation for more information

Propagation

Propagate by seed. See sowing vegetable seeds

Pruning

No pruning required. Harvest roots when they are more than 5cm in diameter

Pests

May be susceptible to aphids, flea beetles and mangold fly (beet leaf miner)

Diseases

May be susceptible to beetroot heart rot, black leg and leaf spot