• Evergreen
    Leathery, elliptic, dark green leaves to 18cm (7in) long.
  • Yellow
    Red in bud opening pale yellow
  • Height
    2m (6½ft)
  • Spread
    2m (6½ft)
  • Medium shrub
    Typically grow to around 4-6 feet in height
    Spreading habit. Produces openly funnel-shaped flowers to 10cm (4in) across in upright trusses of up to 15 flowers.
  • Hardy - average winter
    Hardy through most of the UK apart from inland valleys, at altitude and central/northerly locations. May suffer foliage damage and stem dieback in harsh winters in cold gardens. Plant can withstand temperatures down to -10°C (14°F)
  • Partial shade

RHODODENDRON 'Horizon Monarch'

 
Gift Wrapping available on this plant - UK Delivery Only
£24.00 each 
MULTIBUY SAVING

Any 3+ £21.50 each
Estimated availability autumn 2022 - Not yet confirmed. Could be any time between September and December.
also Large £40.00 each 
Delivery Information Estimated availability autumn 2022
  • Additional Features
    Good to know
    Shallow planting essential
    Pests & Diseases
    Vine weevils, scale insects, powdery mildew, bud blast, honey fungus
    Place of origin
    Garden origin. USA. EC Brockenbrough, Seattle
  • Core Plants
    Rhododendron
  • Hardiness
    Frost hardy (down to -5)
  • Leaf margin
    Entire
    (see photos above)
  • Leaf shape
    Oblanceolate
    (see photos above)
  • Pruning group
    Pruning group 5
    Suitable for: Evergreen shrubs that require minimal pruning.
    Action: Trim or lightly cut back shoots that spoil symmetry. Deadhead regularly.
    When: Annually after flowering.

    RHS group 8
  • Seasonal Interest
    Spring
    Summer
  • Soil Conditions
    Acid / ericaceous loving
    Ideally pH 4.5-6.0
    Fertile moist well-drained soil
    Humus-rich
    Neutral to acid soil
  • Toxic - Category C
    Harmful if eaten
    (People & Pets)
  • Wildlife
    Rabbit Resistant
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Cold weather damage to evergreen plants
Rhododendron - Care Guide
Rhododendron - Propagation
Rhododendron - Video Spotlights
Shrubs and Trees - Seeds - 1) Collecting Seeds
Shrubs and Trees - Seeds - 2) Storing Seeds
Shrubs and Trees - Seeds - 3) Planting Seeds
2m (6½ft)
Medium Shrub - guide for size not form Average Person
  2m (6½ft)
 

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