Coriandrum sativum 'Calypso'PBR

RHS Plant Profile
coriander 'Calypso'

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An upright, clump-forming annual with relatively large, aromatic, bright green leaves. Umbels of white flowers appear in summer. Noted for being slow to bolt so ideal for areas with hot summers

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1–2 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

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

Position

Full sun Partial shade
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)
H2

Colour & Scent

Fragrance Foliage
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Apiaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Columnar upright
Genus
Coriandrum are upright annuals with pinnately divided, aromatic foliage and compound umbels of small white or purplish flowers in summer and early autumn
Name Status
Accepted

How to Grow

Cultivation

Grow in fertile, well drained soil in full sun for seed production or partial shade for leaf production. Slow to bolt. See coriander cultivation for more information

Propagation

Propagate by seed sown in situ in spring. See sowing seeds indoors for further advice

Suggested planting locations and garden types

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

Pruning

Pick leaves as required and remove flower stems before flowering to encourage leaf growth

Pests

May be susceptible to aphids

Diseases

May be susceptible to Powdery mildews