Erigeron 'Dunkelste Aller'

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Synonyms

Erigeron 'Darkest of All', Erigeron [Darkest of All], Erigeron hybridus 'Dunkelste Aller'

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Herbaceous Perennial
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A deciduous, herbaceous perennial forming a clump of erect stems to 60cm, bearing oval grey-green leaves and clusters of yellow-centred, semi-double, deep violet daisy-like flower-heads produced in summer

Position

Full sun

Soil Types

Chalk, 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

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

Position

Full sun
Aspect
West–facing or South–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
Erigeron can be annuals, biennials or perennials with simple or lobed leaves, and daisy-like flowers with many slender rays, appearing over a long period in summer
Name Status
Not established

How to Grow

Cultivation

Grow in fertile, well-drained soil that remains moist in summer. Especially good for planting near the sea. Good drainage is needed, so growing in a raised bed can be useful. See how to grow erigeron for further advice

Propagation

Cultivars are usually propagated by division or from basal softwood cuttings in spring

Suggested planting locations and garden types

  • City and courtyard gardens
  • Coastal
  • Cottage and informal garden
  • Gravel garden
  • Patio and container plants
  • Rock garden
  • Wildlife gardens
  • Flower borders and beds
  • Underplanting of roses and shrubs

Pruning

Cut back at the end of the season

Pests

Generally pest-free

Diseases

Powdery mildew may be a problem