Heliopsis helianthoides var. scabra

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hardy zinnia

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Synonyms

Heliopsis helianthoides subsp. scabra

Plants for pollinators
Herbaceous Perennial
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A species of bushy, deciduous herbaceous perennial with dark green foliage and golden yellow to orange daisy-like flowers with dark yellow centres which appear from July through until September

Position

Full sun

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1-1.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
1-1.5 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or Sheltered
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)
H6

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Asteraceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
Heliopsis are robust perennials with stiff, erect stems; opposite, lance-shaped leaves and showy rich yellow to orange flowers similar to sunflowers
Name Status
Correct
Plant Range
USA

How to Grow

Cultivation

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

Propagation

Propagate by division in autumn or spring or propagate by basal cuttings in spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Patio and container plants
  • Prairie planting
  • Wildlife gardens
  • Flower borders and beds

Pruning

Deadhead to prolong flowering

Pests

May be susceptible to slugs

Diseases

Generally disease-free