Trollius × cultorum 'Etna'

RHS Plant Profile
globeflower 'Etna'

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An upright, clump-forming perennial, up to 75cm high, with glossy, deeply divided and toothed green leaves. Double, cup-shaped, rich golden yellow flowers are borne on upright stems in late spring to early summer

Position

Full sun, Partial shade

Soil Types

Clay, Loam

Max Height

0.5-1 metres

Max Spread

0.5-1 metres

Size

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

Growing Conditions

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

Position

Full sun Partial shade
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)
H7

Colour & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Ranunculaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Clump forming, Columnar upright
Genus
Trollius are herbaceous perennials which form a clump of palmately lobed leaves, with erect stems bearing solitary, yellow, globose or bowl-shaped flowers composed of several petal-like sepals surrounding much-reduced nectar-bearing petals
Name Status
Unresolved

How to Grow

Cultivation

Grow in deep, preferably heavy, moist soil that does not dry out, in full sun or partial shade. Cut back hard after flowering and apply a balanced liquid fertiliser to encourage further blooms

Propagation

Propagate by division as new growth begins in spring

Suggested planting locations and garden types

  • Cottage and informal garden
  • Wildflower meadow
  • Low Maintenance
  • Cut flowers

Pruning

Cut back hard after flowering

Pests

Generally pest-free

Diseases

May be susceptible to powdery mildews