Brassica rapa (Chinensis Group) 'Ivory'

RHS Plant Profile
pak choi 'Ivory'

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Annual Biennial

An easy-to-grow pak choi variety with succulent, crisp white stems and dark green leaves. Use as baby leaf in salads or allow to mature and use the stems and leaves in stir fries

Position

Full sun

Soil Types

Chalk, 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

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

Position

Full sun
Aspect
East–facing or 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
Brassicaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright
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
Unresolved

How to Grow

Cultivation

Thin out seedlings to prevent overcrowding; the thinnings can be used in a salad. Keep the plants well-watered during the growing season to avoid bolting. See 'growing pak choi' in vegetable cultivation

Propagation

Propagate by seed. See sowing vegetable seeds

Suggested planting locations and garden types

  • Cottage and informal garden
  • Patio and container plants
  • Conservatory and greenhouse

Pruning

No pruning required

Pests

May be susceptible to flea beetle

Diseases

May be susceptible to powdery mildews