Phlox paniculata

RHS Plant Profile
perennial phlox
perennial phlox visionspictures.com

Other common names

autumn phlox, cross-leaved phlox, fall phlox, summer perennial phlox, summer phlox, tall garden phlox

Plants for pollinators
Herbaceous Perennial

An upright perennial to 1.2m high with stems carrying broadly lance-shaped, slightly toothed leaves. Pink, purple or white flat-faced flowers, often strongly scented, are grouped in domed clusters and borne atop the leafy stems from mid- to late summer

Position

Full sun, Partial shade

Soil Types

Chalk, Clay, Loam, Sand

Max Height

1-1.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
2–5 years
Max Spread
0.5-1 metres
Max Height
1-1.5 metres

Growing Conditions

Chalk Clay Loam Sand
Moisture
Moist but well–drained
pH
Acid or Alkaline or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing or East–facing
Exposure
Exposed or Sheltered
Hardiness
H7

Colour & Scent

Fragrance Flower
Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Polemoniaceae
Native to GB/Ireland
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
Plant Range
Eastern USA

How to Grow

Cultivation

Grow in fertile, moist soil in full sun or partial shade. See phlox cultivation for further advice

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

  • 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 phlox eelworm

Diseases

May be susceptible to powdery mildews, grey moulds, leafy gall and leaf spot