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    CLETHRA alnifolia
    © Burncoose Nurseries, all pictures for illustrative purposes only.
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    CLETHRA alnifolia  CLETHRA alnifolia  CLETHRA alnifolia  CLETHRA alnifolia
    >

    CLETHRA alnifolia

    Commonly known as Summersweet, Sweet pepper bush, White alder

    White scented species
     
    Full Plant Details - Sun/Soil & other attributes - Click to close
    • Flowering
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    • Good to know
      Wildlife plant - insects, butterflies. Remove some of the old wood from the base in winter leaving the strongest suckers as replacement growth
    • Pests & Diseases
      None.
    • Place of origin
      Eastern USA.
    • Deciduous
      Oval, mid-green leaves to 10cm (4in) long.
    • White
    • Bell/Lantern
      Bell-shaped flowers to 1cm (½in) across
    • Racemes
      Dense, upright, terminal racemes to 15cm (6in) long
    • Fully hardy
    • Serrulate
    • Height
      2.5m (8ft)
    • Spread
      2.5m (8ft)
    • Medium shrub
      Typically grow to around 4-6 feet in height
      Upright, suckering shrub
    • 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)
    • Scented flowers
    • Summer Seasonal Interest
    • Acid / ericaceous loving
    • Fertile moist well-drained soil
      Humus-rich.
    • Partial shade
      Or dappled shade.
    • Bee friendly
    • Butterfly friendly
    • Mature Size
      2.5m (8ft)
      Medium Shrub - guide for size not form Average Person
        2.5m (8ft)
       
    View Planting Tips and Care Advice
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    CLETHRA alnifolia 'Ruby Spice'

    CLETHRA alnifolia 'Ruby Spice'

    Sweet pepper bush, Summersweet
    Available from £17.50
    CLETHRA barbinervis

    CLETHRA barbinervis

    Japanese clethra
    Available from £30.00
    CLETHRA alnifolia 'Pink Spires'

    CLETHRA alnifolia 'Pink Spires'

    Sweet pepper bush, Summersweet
    Available from £16.50
    KALMIA latifolia

    KALMIA latifolia

    Calico bush, Mountain laurel
    Available from £27.50

    Varieties

    CLETHRA alnifolia 'Pink Spires'
    Delicate pink form
     
    2 to 3 Litre
    £16.50
    CLETHRA alnifolia 'Ruby Spice'
    Blue green foliage and rich pink flowers
     
    2 to 3 Litre
    £17.50

    Useful extras...

    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
    Garden Goodies
    Hand made in Cornwall, these delightful natural slate labels are perfect for pots. Comes with chalk pen. Pack of 5
    Tie in slate labels
    £10.00
    Fertilisers & Feeds - Empathy
    All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants. Perfect used in conjunction with Rootgrow™.
    1 ltr
    £8.50
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