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Herbaceous Perennial

Phlox amplifolia

An upright perennial, to around 1.2m high, with spreading rhizomes and broadly lance-shaped, hairy green leaves. Loose clusters of pink, purple or white flowers, with long corolla tubes and flat faces, are borne on slender stems well above the foliage in summer

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Size
Ultimate height
1–1.5 metres
Time to ultimate height
2–5 years
Ultimate spread
0.1–0.5 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Green
Summer Pink Purple White Green
Autumn
Winter
Position
  • Full sun
  • Partial shade
Aspect

South–facing or West–facing

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

Correct

How to grow

Cultivation

Thrives in moist but well-drained soil in full sun or part shade. This species has some tolerance to drought

Propagation

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

Suggested planting locations and garden types
  • Cottage and informal garden
  • Prairie planting
  • Wildflower meadow
  • Flower borders and beds
Pruning

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

Pests

May be susceptible to stem and bulb eelworm

Diseases

May be susceptible to fungal leaf spot. This species has some resistance to powdery mildews

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