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Organic Allium caeruleum 'Azureum' - Blue globe onion | 10 pcs.

Organic Allium caeruleum 'Azureum' - Blue globe onion | 10 pcs.

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Organic blue globe onion

The Siberian Allium caeruleum 'Azureum' owes its name to its azure blue color. It is also known as 'Blue globe onion'. It blooms with star-shaped flowers in umbels with a diameter of about 7 centimeters. The leaves are linear and angular and the stem is about 50 centimeters high. With most alliums, the leaves turn yellow quite quickly during flowering, but the blue allium still retains its leaves beautifully during flowering.

It smells slightly of vanilla and because of the abundance of nectar the plant provides, it attracts bees, bumblebees and butterflies very well. Because of the late flowering time, they can be planted between early flowering perennials for a beautiful effect. It is very suitable for naturalization, it comes back faithfully every year.

The only truly blue allium can be combined with many varieties. It combines very well with the yellow Allium moly 'Jeannine' or the taller white Allium 'Mount Everest'.

How, where and when do I plant an Allium 'Azureum' flowerbulb?

The Allium 'Azureum' is winter hardy and needs a cold period. Plant the flowerbulbs in the ground from October to January. The planting depth is approximately 2 to 3 times the height of the flowerbulb itself and the planting distance is 15 centimeters apart.

It prefers a sunny position, but can also be planted in partial shade. It blooms in almost any nutrient-rich soil, but does not like wet feet.

Care of the Allium caeruleum

The spent flowers are cut off at the top of the stem and the foliage dies off automatically. The flowerbulb can possibly be removed from the ground to move the small bulbs resulting from propagation. they must then be back in the ground before winter. Any food is good, but she does not require any further care.


The Allium 'Azureum' multiplies via breeding balls and seeds. The flowerbulbs can be removed from the ground in July or August to plant the small new bulbs separately. They can go back into the ground straight away, until January at the latest.

Organic Allium caeruleum 'Azureum' - Skal NL-BIO-01 certified: 109459

Packed per 10 pieces or choose more for less in the form of a stacking discount.


Can be ordered from June '24!

Shipping €5.95 - Free shipping from €35 purchase.



Flowering time: May - June
Planting time: From September
Planting depth: 10 cm deep
Planting distance: 15 cm apart
Height: 40 cm high
Flower diameter: 7cm wide
Location: Partial shade. Sun
Soil PH: Loam, sandy soil - Slightly alkaline/neutral
Winter hardiness: Good winter hardy
Propagation: Good (wild)
Family: Alliaceae (garlic family)
Colour: Azure blue
Bee-friendly: Yes
Fragrant: Yes
Bulb size: 4/5

Other allium species:

  • Bio Allium 'Cowanii'
  • Bio Allium 'Mount Everest'
  • Bio Allium 'Purple Sensation'
  • Bio Allium 'Red Giant Star'
  • Bio Allium 'Schubertii'
  • Bio Allium 'Sphaerocephalon'
  • Bio Allium 'Tuberosum' (Garlic Chives)
  • Bio Allium 'Violet Beauty'
  • Bio Allium albopilosum 'Christophii'
  • Bio Allium ampeloprasum 'Ping Pong'
  • Bio Allium moly 'Jeannine'
  • Bio Nectaroscordum siculum 'Bulgaricum' (Bulgarian onion)


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