• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Phlox paniculata 'Blue Paradise'

perennial phlox 'Blue Paradise'

  • Other common names perennial phlox 'Blue Paradise'

  • Family Polemoniaceae

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

  • Details 'Blue Paradise' is an upright perennial to 1.2m tall, with lance-shaped leaves and rounded heads of fragrant, dark-eyed violet-blue flowers in early summer


  • Foliage Deciduous

  • Habit Bushy

  • Fragrance Flower

  • Hardiness

    Hardiness ratings

    All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

    • H1a - Under glass all year (>15C)
    • H1b - Can be grown outside in the summer (10 - 15)
    • H1c - Can be grown outside in the summer (5 - 10)
    • H2 - Tolerant of low temperatures, but not surviving being frozen (1 to 5)
    • H3 - Hardy in coastal and relatively mild parts of the UK (-5 to 1)
    • H4 - Hardy through most of the UK (-10 to -5)
    • H5 - Hardy in most places throughout the UK even in severe winters (-15 to -10)
    • H6 - Hardy in all of UK and northern Europe (-20 to -15)
    • H7 - Hardy in the severest European continental climates (< -20)




  • Full Sun

  • Partial Shade

  • Aspect South-facing or East-facing or West-facing

  • Exposure Sheltered or Exposed


  • Chalk


  • Chalk


  • Chalk


  • MoistureMoist but well-drained

  • SoilClay, Loam, Chalk

  • pHAlkaline, Neutral, Acid


  • Ultimate height 1-1.5 metres

  • Ultimate spread 0.1-0.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Grow in fertile, moist soil in full sun or partial shade

Propagation Propagate by division in autumn or spring. Propagate by basal cuttings in spring or propagate by root cuttings in early autumn or winter

Suggested planting locations and garden types Flower borders and beds City & Courtyard Gardens Cottage & Informal Garden

How to care

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

Pests Generally pest free

Diseases May be subject to a downy mildew and a leaf spot

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