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Rhododendron Horizon Monarch (yellow)
Rhododendron Horizon Monarch (yellow)
Rhododendron Horizon Monarch (yellow)
Rhododendron Horizon Monarch (yellow)
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Rhododendron Horizon Monarch (yellow)

  • A gorgeous standard Rhododendron.
  • Huge flowers, pink on the outside and pale yellow on the inside.
  • Brightens dull borders and great in a container.
  • Evergreen, year-round colour.
  • Supplied as an established plant in a 19cm pot.

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19cm Pot
Item: 511102
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19cm Pot - Item: 511102
DEAL PRICE £24.99
RRP £29.99
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Product Information

The deep pink buds of ‘Horizon Monarch’ open into huge  gorgeous flowers which are pink on the outside and pale yellow on the inside and up to 10cm across during spring, contrasting beautifully with the glossy dark green leaves which can reach 18cm in length.

Grown as a standard, this is a superb specimen plant for a large container and also perfect for the dappled shade of a woodland border where the huge, stunning flowers shine out against the glorious foliage.

Fully deserving its coveted RHS Award of Garden Merit, you can be sure that this is a proven garden performer, guaranteed to be suitable for UK gardeners at every level of experience. You can therefore plant this in the garden with confidence, for stunning displays for many years to come.

Supplied as an established plant in a 19cm pot, ready to plant out.

Plant Care Information

RHS Garden Merit
RHS Garden Merit
Perfect In Pots
Perfect In Pots
Plant In Sunshine
Plant In Sunshine
Winter Hardy
Winter Hardy
Easy To Grow
Easy To Grow

Top Tips

  • Mulch plants and water deeply and regularly during dryer periods from July onwards.

Care Information

  • Rhododendrons with tolerate a more open site as long as they are sheltered from cold, drying winds and early morning sunlight.
  • Your rhododendron should be planted slightly higher than it was in its pot into well-draining soil.
  • Rhododendrons need an acidic soil with a pH of around 5.5 in order to thrive - soils with pH higher than 5.5 should be acidified before planting or you can grow them in a container with ericaceous compost.
  • Planting/Flowering Calendar

    Planting Time
    Flowering Time
    JanFebMarAprMayJunJulAugSepOctNovDec

    Fully Grown Plant Dimensions (approx)

    Plant Dimensions
    200 cm
    100 cm
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    DOUBLE GUARANTEE TO YOU:
    1. If you're not totally happy with your order, return it within 30 days and we'll replace or refund in full!
    2. Should any hardy plant fail to thrive thereafter, we'll replace free of charge - you just pay the P&P
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