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Helianthus 'Lemon Queen' AGM

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© RHS

Characteristics

Plant type

Herbaceous Perennial

Habit

Bushy

Resilience

Hardiness

H7 (very hardy)

Colour

Flower

Pale Yellow in Autumn and Summer

Foliage

Dark Green in Autumn, Spring and Summer

Size

Ultimate height

1.5-2.5 metres

Ultimate spread

0.5-1 metres

Time to ultimate height

2-5 years


Preferred common name

sunflower 'Lemon Queen'

Family

Asteraceae


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

'Lemon Queen' is a strong-growing perennial to 2m tall, with coarse, dark green foliage and light yellow flowers 5cm wide, with pale yellow ray florets about a dark yellow central disk

How to grow

Sunlight

  • Full sun

Aspect

  • South-facing, West-facing or East-facing
  • Sheltered

Cultivation

Grow in a moderately fertile, humus-rich, moist but well-drained, neutral to alkaline soil in full sun. Needs a long hot summer to flower well. May need support

Soil

  • Moist but well-drained
  • Alkaline or Neutral
  • Clay, Chalk or Loam

Propagation

Propagate by division in spring or autumn

Suggested planting locations and garden types

City/Courtyard Gardens, Coastal, Cottage/Informal Garden or Flower borders and beds


How to care

Pruning

Cut back after flowering

Pests

Can get slugs and snails

Diseases

May be affected by powdery mildews and sclerotinia diseases