Camellia 'Tom Knudsen' (_japonica_ × _reticulata_)

RHS Plant Profile
camellia 'Tom Knudsen'

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Shrubs

An evergreen shrub of compact habit, with dark foliage and peony-form double, deep red flowers in late winter and early spring

Position

Full shade, Partial shade

Soil Types

Clay, Loam, Sand

Max Height

1.5-2.5 metres

Max Spread

1.5-2.5 metres

Size

Time to Maturity
10–20 years
Max Spread
1.5-2.5 metres
Max Height
1.5-2.5 metres

Growing Conditions

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

Position

Full shade Partial shade
Aspect
North–facing or West–facing or East–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
Theaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Camellia are evergreen shrubs with simple, ovate, glossy, leathery leaves and showy flowers with solitary or clustered flowers early in the year
Name Status
Accepted

How to Grow

Cultivation

Suitable for woodland and acidic soils. Position in a site sheltered from cold, dry winds and early morning sun as buds and flowers may be damaged by cold winds and late frosts see camellia cultivation

Propagation

Propagate by semi-hardwood cuttings

Suggested planting locations and garden types

  • City and courtyard gardens
  • Patio and container plants
  • Cottage and informal garden
  • Low Maintenance
  • Cut flowers
  • Flower borders and beds
  • Wall side borders

Pruning

Pruning group 8

Pests

May be susceptible to aphids, scale insects and vine weevil

Diseases

May be susceptible to honey fungus (rarely), phytophthora root rot, camellia gall, camellia leaf blight, camellia yellow mottle virus and flowers and camellia petal blight