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Herbaceous Perennial

Aster glehnii 'Aglenii'
  • RHS Plants for pollinators

aster 'Aglenii'

A herbaceous perennial and rather unusual variety with very rigid upright flower stems. Large clusters of small, pure white daisies are borne among pale green foliage during the late summer and autumn months. Needs no staking and is resistant to powdery mildews

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Size
Ultimate height
1–1.5 metres
Time to ultimate height
1–2 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer White Yellow Green
Autumn White Yellow Green
Winter
Position
  • Full sun
Aspect

East–facing or South–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Asteraceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Clump forming, Columnar upright
Genus

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

Name status

Unresolved

How to grow

Cultivation

Grow in well-drained, moderately fertile soil in an open, sunny position. Mildew free, but needs good winter drainage. See aster cultivation

Propagation

Propagate by division or root softwood basal cuttings in spring

Suggested planting locations and garden types
  • Cottage and informal garden
  • Cut flowers
  • Flower borders and beds
  • Underplanting of roses and shrubs
  • Wall side borders
Pruning

Deadhead spent flowers to tidy, cut back stem close to the ground in late autumn or beginning of spring before the new shoots emerge

Pests

May be susceptible to leaf and bud eelworms, slugs and snails

Diseases

May be susceptible to Fusarium wilt and grey moulds

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