• 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

Calendula Powerdaisy Sunny = 'Kercalsun' (Powerdaisy Series)

marigold [PowerDaisy Sunny]

marigold [PowerDaisy Sunny]

© RHS

  • Other common names marigold [PowerDaisy Sunny]

  • Family Asteraceae

  • Genus Calendula can be annuals or woody-based perennials, with simple, aromatic leaves and showy, orange or yellow, daisy-like flower-heads in summer and autumn

  • Details PowerDaisy Sunny is a low, spreading, shrubby plant with neat, glossy, rich green foliage and a continuous covering of flat yellow double daises from spring until late autumn

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • 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)

    H5

Colour

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect South-facing or West-facing or East-facing

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Chalk

  • Loam

    Loam

  • Sand

    Sand

  • MoistureWell-drained

  • SoilChalk, Loam, Sand

  • pHNeutral, Acid, Alkaline

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 Grow in a light, poor, free-draining soil in full sun or partial shade. Ideal for patio containers grown in a loam-based potting compost (JI No.2)

Propagation Propagate by softwood cuttings in summer

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

How to care

Pruning Cut back after flowering; deadhead regularly to prolong flowering and pinch out terminal shoots to encourage bushy growth

Pests Aphids may be a problem

Diseases May be affected by powdery mildews and a virus

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