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Annual Biennial

Erigeron acris
  • RHS Plants for pollinators

blue fleabane

An annual or biennial native plant to about 50cm tall with a basal rosette of shallowly-toothed greyish-green leaves and densely hairy stems. Flowerheads borne in panicles, are 10-15mm across, with pale purple ray florets only a little longer than the pale yellow disc florets, from midsummer to early autumn

Other common names
cedowydd glas
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Size
Ultimate height
0.5–1 metres
Time to ultimate height
1–2 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Loam
Sand
Moisture
Well–drained
pH
Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Grey Silver Green
Summer Purple Yellow Grey Silver Green
Autumn Purple Yellow Grey Silver Green
Winter
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Asteraceae
Native to GB / Ireland
Yes
Foliage
Deciduous
Habit
Clump forming
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

Correct

How to grow

Cultivation

Grow in well-drained preferably alkaline soils in full sun, suited to coastal sites and sand dunes

Propagation

Propagate by seed

Suggested planting locations and garden types
  • Coastal
  • Wildflower meadow
  • Wildlife gardens
Pruning

No pruning required

Pests

Generally pest-free

Diseases

Generally disease-free

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