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Annual BiennialBedding

Helianthus annuus 'Valentine'
  • RHS AGM
  • RHS Plants for pollinators

sunflower 'Valentine'

'Valentine' is a robust annual with single flowers to 17cm across, with light yellow rays around a contrasting deep brown centre

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Size
Ultimate height
1–1.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Brown Yellow Green
Autumn
Winter
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H4
Botanical details
Family
Asteraceae
Native to the UK
No
Foliage
Deciduous
Habit
Columnar upright
Genus

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

Name status

Accepted

How to grow

Cultivation

Grow in moderately fertile, neutral to alkaline, humus-rich, moist but well-drained soil in full sun

Propagation

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

Suggested planting locations and garden types
  • Cottage and informal garden
  • Wildflower meadow
  • Flower borders and beds
  • Cut flowers
Pruning

Cut back after flowering

Pests

Can get slugs and snails

Diseases

May be affected by powdery mildews and sclerotinia diseases

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