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  • MAGNOLIA acuminata 'Blue Opal'
    MAGNOLIA acuminata 'Blue Opal'
    © Burncoose Nurseries, all pictures for illustrative purposes only.
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    MAGNOLIA acuminata 'Blue Opal' MAGNOLIA acuminata 'Blue Opal' MAGNOLIA acuminata 'Blue Opal' MAGNOLIA acuminata 'Blue Opal'
    >

    MAGNOLIA acuminata 'Blue Opal'

    Commonly known as Cucumber tree

    Spectacular blue buds turn dark yellow as they open. This is a unique colour in the magnolia world
    Medium
    plant size comparison icon
    3 - 5 Litre   - Click to view photo
    Delivery Information
    Estimated availability autumn 2025 Any time SEPT-DEC
    £70.00 each 
    Estimated availability autumn 2025 Any time SEPT-DEC - Not yet confirmed. Could be any time between September and December.
    Large
    plant size comparison icon
    5 to 7.5 Litre   - Click to view photo
    Delivery Information
    Available again from NOVEMBER / DECEMBER 2025
    £80.00 each 
    Available again from NOVEMBER / DECEMBER 2025 - Despatch will be anytime during November or December as stock becomes available. Bareroot hedging and roses can be delayed by unfavourable weather conditions.
     
    Full Plant Details - Sun/Soil & other attributes
    • Flowering
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      Apr
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      Aug
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      Sep
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      Nov
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    • Good to know
      'acuminata' is more tolerant of alkaline soils. A compact shrub maturing over decades into a tree
    • Pests & Diseases
      Scale insects, honey fungus, coral spot.
    • Place of origin
      Garden origin.
    • Magnolias - larger gardens
    • Magnolia
    • Deciduous
      Leaves to 25cm (10in) long, dark green above, lighter and softly hairy beneath
    • Yellow
      dark yellow flowers
    • Cup-shaped
      10cm (4in) across
    • Fully hardy
    • Entire
    • Elliptic
    • Oblong
    • Ovate
    • Height
      15m (49ft)
    • Spread
      8m (26ft)
    • Tall Shrub
    • Tree
    • Pruning group 1
      Suitable for: Deciduous and evergreen trees, and some deciduous shrubs.
      Pruning: Minimal pruning required. Prune wayward or crossing branches to maintain a healthy framework.
      When: When dormant in the late winter/early spring. Some in the summer/autumn to prevent bleeding of sap.

    • Hardy - cold winter
      Hardy in most places throughout the UK even in severe winters. May not withstand open/exposed sites or central/northern locations. Plant can withstand temperatures down to -15°C (5°F)
    • Spring Seasonal Interest
    • Summer Seasonal Interest
    • Fertile moist well-drained soil
      Humus-rich
    • Neutral to acid soil
    • Full sun
      shelter from strong winds.
    • Partial shade
    • Broadly conical
    • Mature Size
      15m (49ft)
      tree - guide for size not form Average Person
        8m (26ft)
       
    View Detailed Plant Description

     

    View Planting Tips and Care Advice
    Magnolia - A guide to sizing and pricing
    Magnolia - Spotlight Videos
    Shrubs and Trees - Seeds - 3) Planting Seeds
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    Useful extras...

    Fertilisers & Feeds - Vitax
    Improves vegetable, fruit and flower quality. Blood, Fish and Bone contains three major nutrients essential for strong and healthy growth.
    1.5 kg
    £6.50
    Fertilisers & Feeds - Empathy
    Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
    Small - 60g sachet
    £3.00
    Medium - 150gm sachet
    £6.00
    Large - 360gram sachet
    £12.00
    Unavailable
    Fertilisers & Feeds - Empathy
    Creates a mini-meadow for attracting bees, butterflies and bugs to your garden. 200g sachet which will cover 3 square metres. Contains Rootgrow™ mycorrhizal fungi.
    3m²
    £7.00
    10m²
    £15.50
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