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Herbaceous Perennial

Aster thomsonii 'Nanus'

A compact, clump-forming perennial, to 30cm tall, with oval, toothed leaves on hairy stems. Flowerheads, up to 5cm across, comprising lavender-blue petals and a yellow centre, are held on slender branches from late summer into autumn

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Size
Ultimate height
0.1–0.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Purple Blue Green
Autumn Purple Blue
Winter
Position
  • Full sun
Aspect

East–facing or South–facing or West–facing

Exposure
Sheltered or Exposed
Hardiness
H6
Botanical details
Family
Asteraceae
Native to the UK
No
Foliage
Deciduous
Habit
Clump forming
Genus

Aster can be perennials, annuals or subshrubs, mostly with narrow leaves, and solitary or clustered, daisy-like flowers

Name status

Accepted

How to grow

Cultivation

Grows best in full sun in a well-drained, alkaline soil with moisture in the spring and summer Ideal for a container

Propagation

Propagate by division

Suggested planting locations and garden types
  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Wildlife gardens
  • Low Maintenance
  • Flower borders and beds
  • Garden edging
  • Wall side borders
Pruning

Cut back in late autumn

Pests

May be susceptible to tarsonemid mite

Diseases

May be susceptible to verticillium wilt and grey moulds

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