Allium Bulbs for Sale

Allium Bulbs in Premium Sizes

Ornamental onions come in a range of shapes and sizes, good for architectural use and making a big impact. They are really easy to grow and best planted in Autumn or Winter. Most Alliums flower right at the end of spring in April and May, which is sooner than most summer plants, so use them to fill gaps that will disappear later in summer. Their seed heads are a staple of flower arrangements. 

A minor drawback of alliums is that by the time their flowers are in full force, their foliage below is getting tired, so it pays to interplant them with things that will hide it, such as Tulips.

Take a look at our full list of flower bulbs, or our slightly earlier flowering spring bulb range

For strong establishment and the best flowering, we recommend using the Bulb Starter Rootgrow blend.

All our Alliums are covered by our no-quibble Guarantee, which means you can order with complete confidence. Free delivery on orders over £60. Best advice & friendly support throughout. 

See our handy bulb planting guide for the best flowering results.

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    • Colour: Mauve/violet
    • Height: 60 cms
    • Scent: Faint
    • Flowering: May/June
    • Bulb Size: 10/12 cms
    • Planting Depth: 4 times the height of the bulb
    • Planting Months: September - December
    From £12.89  Inc VAT

    OUT OF STOCK

    • Colour: Silvery Lilac
    • Height: 40-60 cms
    • Scent: Faint
    • Flowering: May/June
    • Bulb Size: 10/12 cms
    • Planting Depth: 4 times the height of the bulb
    • Planting Months: September - December
    • RHS Award of Garden Merit
    From £14.26  Inc VAT

    OUT OF STOCK

    • Colour: Purple
    • Height: 120-140 cms
    • Scent: Mild
    • Flowering: May/June
    • Bulb Size: 18/20 cms
    • Planting Depth: 4 x the bulb height
    • Planting Months: September - December
    • RHS Recommendation for Bees etc
    From £19.79  Inc VAT

    OUT OF STOCK

    • Colour: White
    • Height: 70-80 cms
    • Scent: Faint
    • Flowering:June
    • Bulb Size: 10/12 cms
    • Planting Depth: 4 times the height of the bulb
    • Planting Months: September - December
    From £12.89  Inc VAT

    OUT OF STOCK

    • RHS AGM
    • Colour: Purple
    • Height: 100 cms
    • Scent: Mild
    • Flowering: May/June
    • Bulb Size: 10/12 cms
    • Planting Depth: 4 x the bulb height
    • Planting Months: September - December
    From £12.89  Inc VAT

    OUT OF STOCK

    • RHS AGM
    • Colour: Rich Purple
    • Height: 80-100 cms
    • Scent: Faint
    • Flowering: May/June
    • Bulb Size: 10/12 cms
    • Planting Depth: 4 times the height of the bulb
    • Planting Months: September - December
    From £12.10  Inc VAT

    OUT OF STOCK

    • Colour: Wine Red
    • Height: 90-100 cms
    • Scent: Faint
    • Flowering: May/June
    • Bulb Size: 10/12 cms
    • Planting Depth: 4 times the height of the bulb
    • Planting Months: September - December
    From £13.30  Inc VAT

    OUT OF STOCK

    • Colour: Creamy white
    • Height: 90 cms
    • Scent: Faint
    • Flowering: May/June
    • Bulb Size: 10/12 cms
    • Planting Depth: 4 times the height of the bulb
    • Planting Months: September - December
    From £11.09  Inc VAT

    OUT OF STOCK

    • Colour: White
    • Height: 60-70 cms
    • Scent: Faint
    • Flowering: May-July
    • Bulb Size: 10/12 cms
    • Planting Depth: 4 times the height of the bulb
    • Planting Months: September - December
    • RHS Recommendation for Bees etc
    From £23.80  Inc VAT

    OUT OF STOCK

    • Colour: Purple
    • Height: 60-90 cms
    • Scent: Faint
    • Flowering: July/Aug
    • Bulb Size: 5/6 cms
    • Planting Depth: 4 times the height of the bulb
    • Planting Months: September - December
    • RHS Award of Garden merit
    From £7.19  Inc VAT

    Out of Stock - Next available from August 2021

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