• 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

Gazania 'Dorothy'

treasure flower 'Dorothy'

treasure flower 'Dorothy'

© RHS 1996

  • Other common names treasure flower 'Dorothy'

  • Family Asteraceae

  • Genus Gazania can be annuals or evergreen perennials, of spreading habit, with lobed lance-shaped leaves and showy daisy-like flowers which close in dull weather

  • Details Spreading tender perennial with narrow, glossy green leaves white beneath, and bright light yellow flowers to 6.5cm across, each ray with an olive-green zone at the base

Characteristics

  • Foliage Evergreen

  • Habit Clump-forming

  • 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

Sunlight

  • Full Sun

  • Aspect South-facing

  • Exposure Exposed

Soil

  • Chalk

    Loam

  • Chalk

    Chalk

  • Chalk

    Sand

  • MoistureWell-drained

  • SoilLoam, Chalk, Sand

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height 0.1-0.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 1-2 years

How to grow

Cultivation Drought-resistant and wind-resistant this plant thrives in a poor, well-drained soil but needs full sun for the flowers to open and no damp.

Propagation Propagate by basal stem cuttings

Suggested planting locations and garden types Flower borders and beds City & Courtyard Gardens Coastal Cottage & Informal Garden Patio & Container Plants

How to care

Pruning Dead-heading will promote continuous flowering

Pests Under glass, can get glasshouse whitefly, glasshouse red spider mite, aphids, glasshouse leafhopper, thrips, vine weevil and leaf-mining flies.

Diseases May be affected by glasshouse grey mould

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