Thompson & Morgan

Important delivery notice
The products on this site are only delivered to UK addresses. If you require delivery to another country please visit one of our other sites below.

Refine Results

Refine by..

Email Newsletter

Sign up to our newsletter

Onion & Leek Seeds


Growing onions from seed is easier than you think and can be cheaper than buying onion sets. You'll find all different types of onion in our range - spring, white, red, brown and shallots. Our range of leeks offers outstanding garden and exhibition varieties.

We have found 34 products.
 
Onion : Bunching/Spring : White Lisbon

Spring Onion 'White Lisbon'

Allium cepa, Bunching Onion, Scallion
  • RHS Award of Garden Merit
Very quick growing salad onions, sow Spring Onion White Lisbon in succession for a continuous crop all spring, summer and autumn. More info
    • 1 packet (650 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.99
Shallot : Banana

Shallot 'Figaro'

Allium cepa (Aggregatum Group), Shallot 'Banana'

  Customer Rating

Long, banana-shaped shallots from seed, as used by many celebrity chefs. Shallot 'Figaro' produces attractive, shiny, copper brown-skinned bulbs with crisp white flesh and a very distinct flavour. Sowing densities will determine the size of bulbs you harvest. Stores well for winter use in the kitchen.

 More info
    • 1 packet (200 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.69
Onion : Bunching/Spring : Ishikuro

Onion 'Ishikura' (Bunching Onion)

Allium fistulosum, Oriental Bunching Onion, Spring Onion, Scallion
This perennial oriental bunching onion doesn’t produce bulbs but forms clumps of elongated, straight white stems similar spring onions. Alternatively the stems can be earthed up to produce leek-like stems. Onion ‘Ishikura’ can be harvested when pencil-thin or left to grow as thick as a mature carrot. This RHS AGM variety has a remarkably long harvest period from June to October without the need for successive sowings. Height: 30cm (12"). Spread: 23cm (9").


Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

 More info
    • 1 packet (375 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.49
Onion : Ailsa Craig : Giant/Show Vegetable

Onion 'Ailsa Craig' (Giant/Show Vegetable)

Allium cepa

 This enduringly popular and well known variety makes a splendid choice for the show bench and is equally good in the kitchen. The quality, large, globe shaped bulbs have a rich, golden, straw coloured skin and an excellent mild flavour. For the largest bulbs, Onion ‘Ailsa Craig’ can also be sown in modules in autumn for transplanting outdoors in spring. Height: 45cm (18"). Spread: 10cm (4"). More info
    • 1 packet (350 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.99
Onion : Marco F1 Hybrid

Onion 'Marco' F1 Hybrid

Allium cepa
This maincrop onion produces round, thin necked, straw coloured bulbs with good disease tolerance. Onion ‘Marco’ is superb for storing, remaining in good condition right through to March. This RHS AGM variety reliably produces heavy yields with bulbs achieving a good size in most soils. Height: 45cm (18”). Spread: 10cm (4”). More info
    • 1 packet (250 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.19
Onion : Bunton's Showstopper

Onion 'Bunton's Showstopper'

Allium cepa

 A well named variety that makes a big impression on the show bench! This award-winning exhibitor onion, weighing up to 2.27kg (5lb), was bred by T&M customer Ken Bunton for good shape, a larger base and fabulous skin quality. The giant bulbs of Onion ‘Bunton’s Showstopper’ also store well and have an excellent mild flavour for the kitchen. Height: 45cm (18”). Spread: 10cm (4”). More info
    • 1 packet (75 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.49
Onion : Bunching/Spring : Performer

Onion 'Performer' (Bunching Onion)

Allium fistulosum, Oriental Bunching Onion, Spring Onion, Scallion

Bunching onion ‘Performer’ produces upright, dark green leaves and mild flavoured stems which do not bulb. Use this perennial onion as a spring onion to add to salads or chopped as a chive-like garnish with a mild flavour. This winter hardy variety can be harvested virtually year round from successional sowings. Height: 30cm (12”). Spread: 23cm (9”).


Culinary note: Some parts of these flowers are edible. For more details about edible flowers click here.

 More info
    • 1 packet (300 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.09
Onion : Red Baron

Onion 'Red Baron'

Allium cepa
A mid-late maturing variety, Onion ‘Red Baron’ produces firm, flattish-round bulbs of a beautiful dark red colour. With eye-catching red rimmed flesh and a stronger flavour than most varieties, this RHS AGM variety makes an attractive addition to salads. An excellent cropping red onion with good storage potential. Height: 45cm (18”). Spread: 15cm (6”). More info
    • 1 packet (175 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.49
Kew : Spring Onion : Purplette

Spring Onion 'Purplette'

Allium cepa

  Customer Rating

An early bulbing, glossy purple-red skinned salad onion when small. The colour changes to lovely pastel pink when larger bulbs are pickled or cooked.

 More info
    • 1 packet (300 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.99
Onion : Salad Onion Apache (Deep Purple)

Spring Onion 'Apache'

Allium cepa, Spring Onion 'Deep Purple', Bunching Onion, Scallion
Salad Onion Apache (Deep Purple) is an attractive deep purple-red skinned spring onion with a mild flavour and a crisp texture. The purple outer skin merges with the silver when peeled, adding a colour contrast to salads. Salad Onion Apache is ideal for growing in containers, or outdoors throughout the season. Seeds are in the RHS Vegetable Collection. More info
    • 1 packet (750 seeds)

    • Despatch: Within 2 Days
    •  
    • £1.99
Onion : Feast F1 Hybrid

Spring Onion 'Feast' F1 Hybrid

Allium cepa, Bunching Onion, Scallion
Onion Feast has long pure white slender stems contrast with the dark green, erect leaves of this outstanding spring onion. Excellent heat and downy mildew tolerance. Onion Feast stands very well, keeping in good condition. Ideal for successional sowing. Seeds are in the RHS Vegetable Collection. More info
    • 1 packet (500 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.49
Shallot Zebrune

Shallot 'Zebrune'

Allium cepa (Aggregatum Group), Echalion, Shallot 'Cuisse de Poulet du Poitou'

 Known also as ‘Cuisse de Poulet du Poitou’, this heritage variety of torpedo-shaped, brownish pink-skinned bulbs from seed is increasing in popularity for gourmet cooking and can be used to replace onions in many recipes. Good-sized bulbs for storing. More info
    • 1 packet (200 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.79