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Allium Mount Everest Spring Bulbs

Spring Flowering - UK Hardy Pollinator Friendly

Ornamental Onion

£12.99

size guide

The height of all of our plants is measured from the base of the pot.

Pot Size Pot Diameter Pot Height
6cm 6cm 5.5cm
9cm 9cm 8.5cm
1 Litre 13cm 11cm
2 Litre 17cm 13cm
3 Litre 19cm 15cm
4 Litre 20cm 17cm
5 Litre 23cm 19cm
7 Litre 25cm 20cm

Please note: the pot sizes listed below may vary due to the suppliers we use.

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  • Allium Mount Everest or 'ornamental onion' is a striking herbaceous perennial known for its tall stems and dramatic spherical flower heads. From late Spring to early Summer, it produces large, pure white globe-shaped blooms made up of tiny star-like flowers. These elegant blooms rise above lush green foliage, adding structure and height to borders. Loved by pollinators, Mount Everest brings visual drama and wildlife support to the garden. Reaching up to 120 cm in height, these stately blooms return year after year in UK gardens.

  • Plant Allium Mount Everest bulbs in Autumn to early Winter in fertile, free-draining soil in full sun. Space them around 10cm apart and plant at a depth of three to four times the size of the bulb. Water well after planting and add mulch or compost to improve drainage. After blooming, remove any spent foliage and cut stems back once flowering finishes. Fully hardy in the UK, they naturalise well and return each year with minimal care.

  • Ideal for flower beds, herbaceous borders, and gravel gardens, these tall alliums create impact when planted in groups or dotted through mixed schemes. They pair beautifully with ornamental grasses, perennials, or darker-flowered alliums for contrast. Suitable for patio containers too, and also make excellent cut flowers.

    • Light Required Full sun

    Watering Moderate watering

    Best Growing Conditions Plant Allium Mount Everest bulbs in Autumn to early Winter in fertile, free-draining soil in full sun. Space them around 10cm apart and plant at a depth of three to four times the size of the bulb. Water well after planting and add mulch or compost to improve drainage.

    Plant genus Allium

    Plant type Perennials

    Foliage type Herbaceous

    Hardiness Fully Hardy

    Soil acidity Neutral Soil

    Planting aspect South Facing

    Flower colour White

    Leaf colour Green

    Growth Rate Moderate

    Planting Companion Ornamental grasses, darker-flowered alliums, perennials.

    Standard Delivery (2-4 working days) - Evri

    £4.99 on orders under £40
    FREE on orders over £40
    *Mainland UK only

    Next Working Day Delivery - Evri

    £6.99 on orders under £70
    FREE on orders over £70
    Order by 1pm Mon-Fri

     

    Premium Standard Delivery (2-4 working days) - Royal Mail

    For customers who prefer an alternative carrier, Royal Mail is offered as a premium alternative to our standard Evri service.

    £7.99 on all orders

    Premium Next Working Day Delivery - Royal Mail

    £8.99 on all orders
    *Mainland UK only

    Northern Ireland & Islands Delivery (2-5 working days)

    £5.99 for all orders

    Top tip

    Plant bulbs in autumn for stunning white blooms every spring.

    Key Features

    Beginner Friendly

    Beginner Friendly

    Comes Back Each Year

    Comes Back Each Year

    Good For Containers

    Good For Containers

    Low Maintenance

    Low Maintenance

    Wildlife Friendly

    Wildlife Friendly

    Season of Interest

    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Planting Flowering Harvest