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  • ALLIUM giganteum
    ALLIUM giganteum
    © Burncoose Nurseries, all pictures for illustrative purposes only.
    <
    ALLIUM giganteum  ALLIUM giganteum  ALLIUM giganteum  ALLIUM giganteum   Aster x frikartii ‘Monch’, Allium giganteum, Echinops battanicus and Helenium ‘Wyndley’
© Burncoose Nurseries, all pictures for illustrative purposes only.  Gaura ‘The Bride’, Echinacea purpurea, Persicaria ‘Red Dragon’, Euphorbia palustris and Allium giganteum
© Burncoose Nurseries, all pictures for illustrative purposes only.  Salvia, Persicaria ‘Red Dragon’, Achillea ‘Inca Gold’ and Allium giganteum
© Burncoose Nurseries, all pictures for illustrative purposes only. Achillea ‘Inca Gold’, Echinacea purpurea, Rudbeckia and Allium giganteum
© Burncoose Nurseries, all pictures for illustrative purposes only.
    >

    ALLIUM giganteum

    Commonly known as Giant ornamental onion

    Giant mauve drumstick-shaped flowers
    plant size comparison icon
    2 Litre   - Click to view photo
    Delivery Information
    Estimated availability autumn 2026 Any time SEPT-DEC
    individually £12.50 each , 3+ £10.00 each 
    Estimated availability autumn 2026 Any time SEPT-DEC - Not yet confirmed. Could be any time between September and December.
     
    Full Plant Details - Sun/Soil & other attributes
    • Flowering
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      Jan
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      Feb
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      Mar
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      Apr
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      May
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      Jun
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      Jul
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      Aug
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      Sep
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      Oct
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      Nov
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      Dec
    • Good to know
      Wildlife plant - nectar and pollen for insects.
    • Pests & Diseases
      Onion fly, white rot, downy mildew.
    • Place of origin
      Central Asia.
    • Shades of pink
      All shades of pink through to Carmine (red)
    • Star-shaped
    • Border
      Suitable for the back of a border
    • Fully hardy
    • Height
      1.5m (5ft)
    • Spread
      20cm (8in)
    • Bulb/Corm or rhizomatous perennial
      Bulbous perennial. Produces dense umbels 10cm (4in) across of 50 or more flowers with prominent stamens.
    • Herbaceous
      Strap-shaped, pale-green basal leaves 30-100cm (12-39in) long which wither before flowering.
    • Very hardy
      Hardy in the severest continental climates including exposed upland locations in the UK. Plant can withstand temperatures < -20 (-4°F)
    • Autumn Seasonal Interest
    • Summer Seasonal Interest
    • Fertile moist well-drained soil
      Will tolerate dry conditions
    • Full sun
    • Partial shade
    • toxic if eaten
      (People & Pets)
    • Bee friendly
    • Butterfly friendly
    • Rabbit Resistant
    • Mature Size
      1.5m (5ft)
      bulb/corm - guide for size not form Watering Can
        20cm (8in)
       
    View Planting Tips and Care Advice
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    View Planting Combinations
    Photo of  Aster x frikartii ‘Monch’, Allium giganteum, Echinops battanicus and Helenium ‘Wyndley’ planted together
    Aster x frikartii ‘Monch’, Allium giganteum, Echinops battanicus and Helenium ‘Wyndley’
    Photo of  Gaura ‘The Bride’, Echinacea purpurea, Persicaria ‘Red Dragon’, Euphorbia palustris and Allium giganteum planted together
    Gaura ‘The Bride’, Echinacea purpurea, Persicaria ‘Red Dragon’, Euphorbia palustris and Allium giganteum
    Photo of  Salvia, Persicaria ‘Red Dragon’, Achillea ‘Inca Gold’ and Allium giganteum planted together
    Salvia, Persicaria ‘Red Dragon’, Achillea ‘Inca Gold’ and Allium giganteum
    Photo of Achillea ‘Inca Gold’, Echinacea purpurea, Rudbeckia and Allium giganteum planted together
    Achillea ‘Inca Gold’, Echinacea purpurea, Rudbeckia and Allium giganteum
    Photo of ALLIUM and ARTEMISIA 'Powis Castle' planted together
    ALLIUM and ARTEMISIA 'Powis Castle'
    Photo of ALLIUM and NEPETA 'Six Hills Giant' planted together
    ALLIUM and NEPETA 'Six Hills Giant'
    Photo of ALLIUM giganteum and ALSTROEMERIA 'Indian  Summer' planted together
    ALLIUM giganteum and ALSTROEMERIA 'Indian Summer'
    Photo of ALLIUM giganteum and ERYNGIUM x tripartitum planted together
    ALLIUM giganteum and ERYNGIUM x tripartitum
    Photo of ALLIUM giganteum and LIGULARIA przewalskii planted together
    ALLIUM giganteum and LIGULARIA przewalskii
    Photo of Allium giganteum and Penstemon ‘Garnet’ planted together
    Allium giganteum and Penstemon ‘Garnet’
    Photo of Allium giganteum, Lysimachia ciliata 'Firecracker' planted together
    Allium giganteum, Lysimachia ciliata 'Firecracker'
    Photo of Crocosmia ‘Lucifer’, Echinacea purpurea, Salvia and Allium giganteum planted together
    Crocosmia ‘Lucifer’, Echinacea purpurea, Salvia and Allium giganteum
    Photo of Crocosmia ‘Lucifer’, Echinacea purpurea, Salvia, Allium giganteum and Gaura ‘The Bride’ planted together
    Crocosmia ‘Lucifer’, Echinacea purpurea, Salvia, Allium giganteum and Gaura ‘The Bride’
    Photo of Crocosmia ‘Lucifer’, Echinacea purpurea, Veronicastrum, Allium giganteum and Salvia planted together
    Crocosmia ‘Lucifer’, Echinacea purpurea, Veronicastrum, Allium giganteum and Salvia
    Photo of Echinacea purpurea and Allium giganteum planted together
    Echinacea purpurea and Allium giganteum
    Photo of Gaura ‘The Bride’, Echinacea purpurea, Salvia and Allium giganteum planted together
    Gaura ‘The Bride’, Echinacea purpurea, Salvia and Allium giganteum
    Photo of Helenium ‘Moerheim Beauty’, Crocosmia ‘Lucifer’, Echinacea purpurea, Salvia and Allium giganteum planted together
    Helenium ‘Moerheim Beauty’, Crocosmia ‘Lucifer’, Echinacea purpurea, Salvia and Allium giganteum
    Photo of Hemerocallis ‘Stella de Oro’, Kniphofia rooperi, Crocosmia ‘Lucifer’ and Allium planted together
    Hemerocallis ‘Stella de Oro’, Kniphofia rooperi, Crocosmia ‘Lucifer’ and Allium
    Photo of Kniphofia rooperi and Allium planted together
    Kniphofia rooperi and Allium
    Photo of Kniphofia rooperi, Hemerocallis ‘Stella de Oro’, Allium and Crocosmia ‘Lucifer’ planted together
    Kniphofia rooperi, Hemerocallis ‘Stella de Oro’, Allium and Crocosmia ‘Lucifer’
    Photo of Penstemon ‘Mother of Pear’, Helenium ‘Ruby Tuesday’, Echinacea purpurea, Achillea ‘Inca Gold’ and Allium giganteum  planted together
    Penstemon ‘Mother of Pear’, Helenium ‘Ruby Tuesday’, Echinacea purpurea, Achillea ‘Inca Gold’ and Allium giganteum

    Useful extras...

    Fertilisers & Feeds - Vitax
    A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
    0.9 kg
    £6.00
    Unavailable
    2.5 kg
    £13.00
    Unavailable
    4.5 kg
    £25.00
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