GARDENIA augusta 'Crown Jewel'

Commonly known as Cape jasmine

Double white perfumed flowers. Frost hardy
Further Reading....
  • Evergreen
    Ovate, elliptic or lance-shaped, glossy, deep green leaves to 10cm (4in) or more long usually carried in whorls of 3.
  • White
  • Height
    1m (39in)
  • Spread
    75cm (30in)
  • Medium shrub
    Typically grow to around 4-6 feet in height
  • Half hardy - unheated greenhouse / mild winter
    Hardy in coastal and relatively mild parts of the UK except in severe winters and a risk from sudden (early) frosts. May be hardy elsewhere with wall shelter or good micro-climate. Likely to be damaged or killed in cold winters. Plant can withstand temperatures down to -5°C (23°F)
  • Partial shade
    Or light, dappled shade

GARDENIA augusta 'Crown Jewel'

 
  • Additional Features
    Good to know
    A good subject for a container in areas with cold winters. Can be moved into protection.
    Pests & Diseases
    Under glass - whiteflies, stem and root mealybugs, grey mould
    Place of origin
    China, Taiwan, Japan
  • Flower Shape
    Double
    Multi rows of petals, no stamen showing
    Saucer-shaped
    To 8cm (3in) across
  • Garden Location/Conditions
    Greenhouse / conservatory
    Not the sort of plants to be grown outside where there are likely to be frosts. These plants need to be grown in a conservatory or cool greenhouse or at least brought inside for the winter
    Under glass use ericaceous compost in full light. Keep barely moist in winter. Might require restrictive pruning
    Patio / pot plants
    Suitable for small gardens
  • Hardiness
    Frost hardy (down to -5)
  • Leaf margin
    Entire
    (see photos above)
  • Leaf shape
    Elliptic
    (see photos above)
  • Pruning group
    Pruning group 6
    Suitable for: Evergreen shrubs or climbers that need little to no pruning.
    Action: Trim back shoots that spoil symmetry and to fit available space.
    When: Annually after flowering if on previous year's growth, or in later Winter or Spring if flowering on current year's growth, or as requires.

    RHS group 9 & 11
  • Scented Plants
    Scented flowers
  • Seasonal Interest
    Autumn
    Summer
  • Soil Conditions
    Fertile moist well-drained soil
    Humus-rich.
    Neutral to acid soil
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
1m (39in)
Medium Shrub - guide for size not form Watering Can
  75cm (30in)
 

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