Phlox Surphlox Series

RHS Plant Profile
phlox Surphlox Series
Annual Biennial

An upright annual with small lance-shaped dark-green leaves and clusters of fragrant flowers in summer in colours including purple, scarlet, crimson, orange, pink, yellow, cream and bicoloured combinations. Has long branching, wiry stems, very suited as cut flowers

Position

Full sun, Partial shade

Soil Types

Chalk, Loam, Sand

Max Height

0.1-0.5 metres

Max Spread

0.1-0.5 metres

Size

Time to Maturity
1–2 years
Max Spread
0.1-0.5 metres
Max Height
0.1-0.5 metres

Growing Conditions

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

Position

Full sun Partial shade
Aspect
East–facing or South–facing or West–facing
Exposure
Exposed or Sheltered
Hardiness
H6

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
Columnar upright
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
Unresolved

How to Grow

Cultivation

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

Propagation

Propagate by seed

Suggested planting locations and garden types

  • City and courtyard gardens
  • Cottage and informal garden
  • Patio and container plants
  • Low Maintenance
  • Bedding
  • Cut flowers
  • Flower borders and beds

Pruning

Deadhead to promote continous flowering

Pests

May be susceptible to stem and bulb eelworm

Diseases

May be susceptible to Powdery mildews, grey moulds and leafy gall