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Herbaceous Perennial

Phlox paniculata 'Rosa Pastell'
  • RHS AGM
  • RHS Plants for pollinators

perennial phlox 'Rosa Pastell'

An herbaceous perennial, up to 70cm high, with dark green stems and green, lance-shaped leaves. Large, strongly-scented, pale pink to white flowers with a darker eye, emerge from dark pink buds in mid and late summer

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Size
Ultimate height
0.5–1 metres
Time to ultimate height
2–5 years
Ultimate spread
0.5–1 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green Green
Summer Green Pink White Green
Autumn Green Pink White Green
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing or East–facing

Exposure
Exposed or Sheltered
Hardiness
H7
Botanical details
Family
Polemoniaceae
Native to GB / Ireland
No
Foliage
Deciduous
Habit
Bushy
Genus

Phlox may be evergreen or herbaceous, mat-forming or erect perennials or shrubs, with simple leaves and salver-shaped flowers in terminal clusters

Name status

Accepted

How to grow

Cultivation

Grow in moist soil in full sun or partial shade

Propagation

Propagate by division in autumn or spring, by basal cuttings in spring or by root cuttings in early autumn or winter

Suggested planting locations and garden types
  • Prairie planting
  • City and courtyard gardens
  • Cottage and informal garden
  • Wildlife gardens
  • Cut flowers
  • Flower borders and beds
Pruning

Deadhead to prolong flowering then cut down to the base in late autumn

Pests

May be susceptible to stem eelworm

Diseases

May be affected by powdery mildews, grey moulds, and leafy gall

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