Ashridge Nurseries is working as normal and the despatching of bareroot plants is underway. 

You can see Current Delivery Information Here. We are now taking orders for delivery in January 2021.

Giant Onion Allium Bulbs

  • Free Delivery
  • HOW TO GET
    FREE DELIVERY
Free Returns
5 Years Guarantee For signed up members
Shade Full Sun
Area Frost Pockets, Scotland & The North
Soil Good, Well Drained
Colour Purple
Flowering May, Jun
  Buy 2 or more packs and save

SIZES 1 2-910+
Pack of 5 Out of Stock £17.99Out of Stock£17.10Out of Stock£16.56
  Prices include VAT

Out of Stock - Now sold out until August 2021

£11.94

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Allium Giganteum

This is the largest allium grown in the UK which also makes it the biggest of the allium bulbs for sale on this site. Allium giganteum lives up to its name; the violet/mauve flowerhead is as large as a small melon and sits atop a strong stem of up to 130-150 cms tall. The long strappy leaves are all at the base of the stem and will have mostly died back when the flowers open. The seed head that follows changes in colour through pink to a light brown - almost straw - colour. The heads dry very well and are ideal for dried flower arrangements. This is an imposing allium, but not as showy as Purple Sensation or Purple Rain (ideal for Prince fans).

Allium giganteum hails from mountainous Central Asia where it enjoys the excellent drainage found in the foothills and lower mountain slopes. This explains its need for sun and excellent drainage in the garden. In the garden, it is a plant that prefers a well drained and sunny situation.

  • Colour: Mauve/violet
  • Height: 120-140 cms
  • Scent: Faint
  • Flowering: May/June
  • Bulb Size: 18/20 cms
  • Planting Depth: 4 times the height of the bulb
  • Planting Months: September - December

Holds the RHS "Plants for Pollinators" badge, meaning that it is great for bees, butterflies, and other insects that depend on flowers with a good supply of nectar. 

  • Small Box

    Small box

    (Orders containing only seedlings or rooted cuttings)

    £7.20

    including VAT per order

    FREE

    For ORDERS
    Over £60 inc VAT

  • Standard box

    (Bareroots up to
    1.2m)

    £11.40

    including VAT per order

    FREE

    For ORDERS
    Over £60 inc VAT

  • Large box

    (Pots up to
    and incl. 7.5L)

    £15.00

    including VAT per order

    FREE

    For ORDERS
    Over £100 inc VAT

  • Trees & Hedging

    (Bareroots &
    trees 1.2m+)

    £18.00

    including VAT per order

    FREE

    For ORDERS
    Over £120 inc VAT

  • Pallets

    (Root balls, large pots,
    trees etc)

    £60.00

    including VAT per order

    FREE

    For ORDERS
    Over £240 inc VAT


Bareroot planting is best done between October and April
Bareroot and potted - what's the difference?

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Thank you, The Ashridge Nurseries Team.

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