Thompson & Morgan

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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 36 products.
 

Spring Onion 'White Lisbon'

Allium cepa

  • RHS Award of Garden Merit
Very quick growing salad onion. Sow Spring Onion White Lisbon in succession for a continuous crop all spring, summer and autumn. This customer favourite is also the best variety for overwintering - make a late sowing in September and see!
More info
    • 1 packet (160 spring onion seeds - seed tape)

    • Despatch: By end of May 2016
    •  
    • £2.99
    • 1 packet (650 spring onion seeds)

    • Despatch: By end of May 2016
    •  
    • £2.29

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.

Useful links:

Companion PlantingHow to grow Onions

More info
    • 1 packet (200 shallot seeds)

    • Despatch: By end of May 2016
    •  
    • £3.29 £0.99

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").


Companion planting: Try growing onions with mint to confuse and deter onion fly.


Useful links:

Companion PlantingHow to grow Onions


More info
    • 1 packet (75 onion seeds)

    • Despatch: By end of May 2016
    •  
    • £2.99 £0.99

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").


Companion planting: Try growing onions with mint to confuse and deter onion fly.


Useful links:

Companion PlantingHow to grow Onions


More info
    • 1 packet (350 onion seeds)

    • Despatch: By end of May 2016
    •  
    • £1.99

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").


Companion planting: Try growing onions with mint to confuse and deter onion fly.


Useful links:

Companion PlantingHow to grow Onions


More info
    • 1 packet (250 onion seeds)

    • Despatch: By end of May 2016
    •  
    • £2.69 £0.99

Onion 'Rosanna' (Spring Planting)

Allium cepa

 Customer Rating

A distinctive and appealing reddish brown skinned, semi-globe shaped bulb with stunning pink rings when sliced. Onion 'Rosanna' is ideal for all culinary uses with a real old fashioned flavour, similar to those purchased from the French onion seller of yesteryear. Height: 45cm (18"). Spread: 15cm (6").


Companion planting: Try growing onions with mint to confuse and deter onion fly.


Useful links:

Companion Planting

More info
    • 1 packet (350 onion seeds)

    • Despatch: By end of May 2016
    •  
    • £2.19 £0.99

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").


Companion planting: Try growing onions with mint to confuse and deter onion fly.


Useful links:

Companion PlantingHow to grow Onions


More info
    • 1 packet (175 onion seeds)

    • Despatch: By end of May 2016
    •  
    • £2.99

Onion 'Summer Isle' (Bunching Onion)

Allium fistulosum, Oriental Bunching Onion, Spring Onion, Scallion

This superb RHS AGM Oriental bunching onion has been bred for its sweet and mild flavour. Use this non-bulbing, perennial onion as a spring onion to add to salads or chopped as a chive-like garnish with a mild flavour. Winter hardy Onion 'Summer Isle' can be harvested virtually year round from successional sowings. Height: 30cm (12"). Spread: 23cm (9").


Companion planting: Try growing onions with mint to confuse and deter onion fly.


Useful links:

Companion PlantingHow to grow Onions


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

More info
    • 1 packet (500 onion seeds)

    • Despatch: By end of May 2016
    •  
    • £2.19 £0.99

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").


Companion planting: Try growing onions with mint to confuse and deter onion fly.


Useful links:

Companion PlantingHow to grow Onions


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

More info
    • 1 packet (300 onion seeds)

    • Despatch: By end of May 2016
    •  
    • £2.69

Shallot 'Camelot' F1 Hybrid

Allium cepa (Aggregatum Group)

Visually stunning, Shallot 'Camelot' is the darkest red-skinned variety available from seed. Each seed produces an individual, small, white fleshed bulb that will store extremely well for use throughout late autumn and winter. Shallots have become increasingly popular for their distinctive flavour, offering an interesting alternative to onions. Height: 35cm (14"). Spread: 15cm (6").

Useful links:

Companion PlantingHow to grow Onions

More info
    • 1 packet (60 shallot seeds)

    • Despatch: By end of May 2016
    •  
    • £3.19 £0.99

Spring Onion 'Apache' - RHS endorsed vegetable seeds

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.

These vegetable seeds are endorsed by the RHS.
More info
    • 1 packet (750 spring onion seeds)

    • Despatch: By end of May 2016
    •  
    • £2.69

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.


Useful links:

Companion PlantingHow to grow Onions

More info
    • 1 packet (200 shallot seeds)

    • Despatch: By end of May 2016
    •  
    • £2.99