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Aster lateriflorus var. horizontalis AGM

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© RHS

Characteristics

Plant type

Herbaceous Perennial

Habit

Bushy

Resilience

Hardiness

H7 (very hardy)

Colour

Flower

Red and White in Autumn

Foliage

Green in Autumn, Spring and Summer

Size

Ultimate height

0.1-0.5 metres

Ultimate spread

0.1-0.5 metres

Time to ultimate height

2-5 years


Preferred common name

horizontal calico aster

Family

Asteraceae


Aster can be perennials, annuals or subshrubs, mostly with narrow leaves, and solitary or clustered, daisy-like flowers, usually in late summer and autumn

'Horizontalis' is a compact herbaceous perennial with small, narrow leaves and wide-spreading branched sprays bearing tiny white-rayed flowers with reddish centres

How to grow

Sunlight

  • Full sun

Aspect

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

Cultivation

Grow in moderately fertile, well-drained soil in open sunny position; may need staking

Soil

  • Well-drained
  • Acid, Alkaline or Neutral
  • Sand, Chalk or Loam

Propagation

Propagate by division in spring

Suggested planting locations and garden types

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


How to care

Pruning

Cut back in late autumn

Pests

Generally pest free

Diseases

Asters may suffer Verticillium wilt, powdery mildews and grey moulds