• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Gardenia jasminoides

Cape jasmine

AGM plants

AGM plants have been through a rigorous trial and assessment programme. They are:

  • Excellent for ordinary use in appropriate conditions
  • Available to buy
  • Of good constitution
  • Essentially stable in form & colour
  • Reasonably resistant to pests & diseases
Cape jasmine

© � RHS 2002

  • Other common names Cape jasmine
    common gardenia

  • Synonyms Gardenia augusta
    Gardenia florida L.

    Gardenia grandiflora

    see more
  • Genus Gardenia are bushy evergreen shrubs or trees, with attractive glossy leaves and large, fragrant white funnel- or bowl-shaped flowers with from 5 to 11 lobes

  • Family Rubiaceae / Rubiaceae

  • Details G. jasminoides is a large evergreen shrub with deep glossy green, elliptic leaves and very fragrant, broadly funnel-shaped white flowers 8cm across in summer and autumn

  • Plant range China, Japan

Characteristics

  • Foliage Evergreen

  • Habit Bushy

  • Fragrance Flower

  • 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)
    Old hardiness ratings

    While we update our systems with the new hardiness ratings you may still see old hardiness ratings in your search results. These are denoted as 'Old'.

    • H1 - Requires heated glass
    • H2 - Requires unheated glass
    • H3 - Hardy outside in some regions of the UK
    • H4 - Hardy throughout the UK
    • H1 + H3 - Requires heated glass but may be grown outside in summer

    For full details of the hardiness ratings see

    see more

    H1c

Colour

Sunlight

  • Partial Shade

  • Aspect South-facing

  • Exposure Sheltered

Soil

  • Chalk

    Loam

  • Chalk

    Clay

  • Chalk

    Sand

  • MoistureMoist but well-drained

  • SoilLoam, Clay, Sand

  • pHAcid, Neutral

Size

  • Ultimate height

    1-1.5 metres

  • Ultimate spread

    1-1.5 metres

  • Time to ultimate height

    5-10 years

How to grow

Cultivation Grow outdoors in neutral to acidic soil in moist but well-drained soil in partial or light dappled shade in a frost free site. Must be in a sheltered, frost-free warm area. Grow under glass in lime-free soil in bright filtered light in moderate humidity.

Propagation Propagate by seed, greenwood or semi-hardwood cuttings

Suggested planting locations and garden types Sub-tropical

How to care

Pruning Pruning group 9

Pests Prone to glasshouse whitefly and mealybugs under glass

Diseases May be affected by glasshouse grey mould

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