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HAMAMELIS x intermedia 'Arnold Promise'
Commonly known as Winterbloom, Witch hazel
Large yellow flowers in mid and late winter
Plant Details
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Floweringlocal_floristJanlocal_floristFeblocal_floristMarlocal_floristAprlocal_floristMaylocal_floristJunlocal_floristJullocal_floristAuglocal_floristSeplocal_floristOctlocal_floristNovlocal_floristDec
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Good to knowH. japonica(Japan) x H. mollis(China)
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Pests & DiseasesHoney fungus, coral spot
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Place of originGarden origin.
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DeciduousVariably margined, bright-green leaves to 15cm (6in) long, turning red and yellow in autumn.
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Yellow
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Fully hardy
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Obovate
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Height4m (13ft)
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Spread4m (13ft)
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Tall ShrubVase-shaped shrub with ascending branches. Spider-shaped flowers 2-3cm (¾-1¼in) across with 4 narrow petals in dense, axillary clusters on bare branches.
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Hardy - cold winterHardy 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)
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Scented flowers
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Autumn Seasonal Interest
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Winter Seasonal Interest
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Mature Size4m (13ft)
4m (13ft)
Planting Tips and Care Advice
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Garden Location/Conditions
BorderSuitable for a shrub borderCottage garden
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Pruning group
Pruning group 1Suitable 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.
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Soil Conditions
Fertile moist well-drained soilModerately fertileNeutral to acid soilWill also tolerate deep, humus-rich soils over chalk
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Sun Requirements
Full sunPartial shade
Hamamelis Growing Guide