• 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

Helianthus annuus 'Sunsation Yellow' (Sunsation Series)

sunflower 'Sunsation Yellow'

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
  • Other common names sunflower 'Sunsation Yellow'

  • Family Asteraceae

  • Genus Helianthus can be tall, erect annuals, tuberous or rhizomatous perennials, with coarse simple leaves and large daisy-like flower-heads

  • Details 'Sunsation Yellow' is a compact annual, to 75cm tall, with glossy, dark green, ovate leaves. Flowerheads, borne from summer into autumn, are yellow with brown centres and reach up to 17cm in diameter

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)

    H4

Colour

Sunlight

  • Full Sun

  • Aspect West-facing or South-facing

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • Chalk

    Chalk

  • Loam

    Loam

  • MoistureWell-drained, Moist but well-drained

  • SoilSand, Chalk, Loam

  • pHAlkaline, Neutral

Size

  • Ultimate height 0.5-1 metres

  • Ultimate spread 0.5-1 metres

  • Time to ultimate height 1 year

How to grow

Cultivation Grow in full sun in any fertile, well-drained, neutral, or preferably calcareous, soil. Ideal for growing in containers. The flowers attract bees and other insects, and the edible seeds provide food for birds, especially finches

Propagation Propagate by seed sown in-situ or in a pots or modules in spring

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

How to care

Pruning None required

Pests May be affected by slugs and snails

Diseases May be affected by powdery mildews and sclerotinia diseases

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