Allium Bulbs

Creating the most magnificent display, Alliums come in all sorts of shapes and sizes. Although a firm favourite with avid gardeners, these are most popular with bees, butterflies and insects who can not resist those nectar-rich flowers. Gigantic alliums such as Giganteum will create drama planted in borders, whilst Wild Garlic will fill the air with its scent after those early spring showers.

 

Like everything we supply here at Boston Seeds, we pride ourselves on supplying professional quality - and for flower bulbs, that means BIG! Our bigger bulbs produce bigger, better and bolder flowers. Choose from our exciting range of varieties - allium surprise bulb collection, old favourites, garden classics as well as striking new lines for 2021.

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A wild relative of chives, Wild Garlic (or Ramsons) grows from a small bulb and ...

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Bulb Planter
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Making bulb planting easier, quicker and cleaner, our bulb planter is the ideal tool for helping you plant your s...

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Producing large spherical flower heads, that are a fantastic lilac purple. These are a must to attract bees and o...

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These magnificent allium flower heads supply a real feast of nectar for pollinat...

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A structural masterpiece! This stunning giant allium will add height to your borders as well as attracting an arr...

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Looking stunning when planted in a border amongst contrasting ornamental grasses...

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Saving over 50% rather than buying individually.

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Caeruleum Allium Bulbs
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Easy to grow, these deep aqua blue blooms will appear mid-May adding a boost of colour into your beds' border...

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A more unusual Allium, the Christophii form the classic globe flower head but produce multiple starburst flowers ...

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Cowanii Allium Bulbs
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These small dainty pure white blooms have multiple flowers per stem. These are a smaller allium and ideal for add...

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Our best value selection for adding the beautiful giant alliums into your garden...

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Giganteum Allium Bulbs
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Large violet-purple globes, that open up to 6 inches across, these giant alliums add structure and focus to borde...

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Gladiator Allium Bulbs
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Standing over a meter high these enormous lilac/ purple globe heads can be up to 15cm across. These make great cu...

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The later flowering Globemaster is one of the giant alliums, adding height and attracting a flurry of pollinating...

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Producing several small star-like flowers on each stem, the flower heads open to...

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Moly Allium Bulbs
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A firm favourite with the bees, these golden yellow blooms appear with multiple flowers on each stem. Excelling i...

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Either planted in groups or individually, these stunning giant alliums are a sight to behold. Their tall stems su...

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Exuberant pure snowy white gigantic blooms, the Mount Everest Alliums are a real...

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These fantastic white/ green globe flower heads will add height and structure to...

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Planted in mass, these dainty little alliums have delicate clusters of pure white flowers appearing on one stem. ...

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Also known as Honey Lily or Siculum, this unusual flower has long hanging bell-s...

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Obliquum Allium Bulbs
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These unique cylindrical blooms have a fluffy appearance, their yellow/ greenish flower heads have a strong scent...

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These grand blooms can grow up to 15cm in diameter and are a perfect choice for mixing with earlier flowering all...

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A firm gardeners favourite, these bulbs will produce a vivid purple flower head ...

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These burgundy red flowers appear towards the end of spring/ early summer and have distinctive tufts form white f...

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A perfect addition to add to a long flowering spring display, these tall alliums...

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Roseum Allium Bulbs
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Appearing in early May these dainty delicate blooms are a delight in any garden. Perfect to add in amongst your b...

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Schubertii alliums are a favourite in classic garden designs and often found in landscaped gardens. The striking ...

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Planted in groups, this allium produces distinctive egg-shaped flowers that bloo...

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Rich deep purple large globe flower heads, appearing in late June on their strik...

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Unifolium Allium Bulbs
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The light candy floss pink star-like flowers open up in early May and are such a delight to see. The soft colour ...

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Opening to reveal multiple flowers per stem, these beautiful purple-pink blooms ...

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Our bulb planting essentials pack has been put together for the ease of ensuring...

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Bulb Fibre
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Specifically designed to help bulbs establish in pots, without the risk of the bulbs rotting, providing an open a...

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Daffodil Bulb Fertiliser
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Whether you are establishing in pots, hedgerows or large landscaped areas sprinkle a small amount into each hole ...

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Alliums: Advice On How To Grow Them (And Why!)

 

If you’ll pardon the pun, this bulb flower has a real way of growing on you: it produces medium-to-tall upright stalks, ending in a bold globe of fluffy-looking florets in a rich violet colour (though several species have lighter lilac petals). These punchy, purple pom-poms have a real way of drawing the eye: as such, you’re best scattering them evenly throughout a sunny border or a tall, grassy meadow. They’re also excellent cut flowers!

 

Fun Facts

The ornamental allium symbolises unity and patience. Fitting, as it grows dozens of florets in one bulb. In fact, the word “onion” is derived from the latin word unio, as in union!

There aren’t many myths surrounding onions, as you may expect from a plant most commonly seen in the kitchen; however, there are some myths linking them to the magic of tears and the importance of emotional release.

 

How to grow

Alliums are best planted early-to-mid autumn, and typically flower in May to June. They need well-drained soil and plenty of sunlight - be wary of cold or wet conditions where the bulbs may rot. Their tall, upright stems also require protection from the wind.

 

Smaller species of allium should be planted roughly 10cm apart; taller species require 20cm between each bulb. Alternatively, they can be planted in containers.

 

Alliums are tolerant to drought and dislike being watered in the summer. Alliums grown in containers will need regular watering, but take care that they don’t get too damp.

 

Alliums have sparse foliage at the base that will begin to die at flowering time. You can cover these up with lower-growing flowers, or remove them to no ill effect.

 

Species & Styles

Popular allium species include Gladiator and Globemaster: these are formidable flowers in terms of size alone, with their flower heads growing 10-25cm across! Similarly, the well-named Mount Everest is one of the taller allium species at an average of 90cm tall.

 

Thinking about mixing and contrasting colours? The more popular varieties are iris purple, but there are plenty of others: the aforementioned ‘Mount Everest’ breed, as well as the smaller Graceful’ Beauty breed, both have a pale silver-lilac colouration. Meanwhile, the later-blooming Allium atropurpureum and Allium sphaerocephalon have smaller, denser flower heads that bloom in a richer magenta (and the latter is accented with green).

Bright orange and yellow plants lend themselves to an eye-catching, summery effect. For a softer look, try a pale white or pink plant, or a plant with silver foliage.