• 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

Ilex × meserveae Blue Prince = 'Conablu' (m)

blue holly [Blue Prince]

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
  • Other common names blue holly [Blue Prince]

  • Synonyms Ilex × meserveae 'Conablu'
    Ilex × meserveae 'Blue Prince'

  • Family Aquifoliaceae

  • Genus Ilex can be deciduous or evergreen shrubs and trees with often spiny leaves, small white flowers (male and female usually on separate plants) and, on female plants, showy berries in autumn

  • Details [Blue Prince] is a large, prickly, evergreen shrub with dark, purplish-green stems and dark, bluish-green foliage. It has small, white flowers in spring but, as a male, produces no berries

Characteristics

  • Foliage Evergreen

  • Habit Bushy

  • 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)

    H7

Colour

Sunlight

  • Partial Shade

  • Full Sun

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

  • Exposure Exposed or Sheltered

Soil

  • Sand

    Sand

  • Clay

    Clay

  • Chalk

    Chalk

  • Loam

    Loam

  • MoistureMoist but well-drained, Well-drained

  • SoilSand, Clay, Chalk, Loam

  • pHAlkaline, Neutral, Acid

Size

  • Ultimate height 2.5-4 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Grow in moist but well-drained, moderately fertile soil in full sun or partial shade

Propagation Propagate by semi-ripe cuttings in late summer or early autumn

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

How to care

Pruning Pruning group 1

Pests Aphids can affect young shoots, scale insects and holly leaf miner can also be a problem

Diseases Phytophthora root rot, or holly leaf blight may occur

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