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Annual Biennial

Helianthus annuus 'Sunsation Yellow' (Sunsation Series)
  • RHS AGM

sunflower 'Sunsation Yellow'

'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

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
1 year
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Brown Yellow Green
Autumn Brown Yellow Green
Winter
Position
  • Full sun
Aspect

West–facing or South–facing

Exposure
Sheltered
Hardiness
H4
Botanical details
Family
Asteraceae
Native to the UK
No
Foliage
Deciduous
Habit
Bushy
Genus

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

Name status

Unresolved

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
  • City and courtyard gardens
  • Wildlife gardens
  • Cottage and informal garden
  • Patio and container plants
  • Cut flowers
  • Flower borders and beds
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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