Allium Mount Everest Spring Bulbs

Spring Flowering - UK Hardy Pollinator Friendly

Ornamental Onion

£14.99

Pot Size Guide

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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Good To Know:
Eventual Height
Eventual Height

120cm

Season of Interest
Season of Interest

Spring


  • 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
    Light Required

    Full sun

    Watering
    Watering

    Moderate watering

    Best Growing Conditions
    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.

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