Eurybia × herveyi

RHS Plant Profile
Hervey's aster

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Hervey's aster Dorling Kindersley Ltd

Synonyms

Aster macrophyllus 'Twilight'
Eurybia macrophylla 'Twilight'
Aster 'Twilight'
Aster × herveyi

Herbaceous Perennial
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A bushy perennial to 1m with lance-shaped green leaves. Daisy-like, pale lavender-blue flowers with yellow centres appear in clusters on slender, branching stems in late summer and autumn. Potentially more resistant to mildew than other varieties

Position

Full sun, Partial shade

Soil Types

Clay, Loam, Sand

Max Height

0.5-1 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
2–5 years
Max Spread
0.1-0.5 metres
Max Height
0.5-1 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
South–facing or West–facing or East–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
Asteraceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus
Eurybia is a genus of woody perennials. Leaf shape can differ between varieties and flowers can be white or light pink to purple with yellow corona.
Name Status
Correct
Plant Range
NE USA

How to Grow

Cultivation

Grow in full sun or partial shade in a moderately fertile, well-drained soil

Propagation

Propagate by division

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Flower borders and beds
  • Cut flowers

Pruning

Cut back after flowering

Pests

Generally pest-free

Diseases

Generally disease-free