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 5 products.
 
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 : 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
Onion : Hi Keeper F1 Hybrid

Onion 'Hi Keeper' F1 Hybrid

Allium cepa

 With excellent winter hardiness, this is by far the best variety for overwintering from an autumn sowing outdoors. Onion ‘Hi Keeper’ produces quality globe shaped bulbs weighing 120g (4oz), with golden yellow skins that will store well. This versatile variety is equally good from a spring sowing and makes a fine choice for the kitchen or the show bench. Height: 45cm (18”). Spread: 10cm (4”). More info
    • 1 packet (80 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.99
Onion : Supasweet™ (Dulcinea) F1 Hybrid

Onion 'Supasweet'™ (Dulcinea) F1 Hybrid

Allium cepa

The first commercial variety of sweet and mild bulb onions available to UK gardeners! The large semi-globe, copper-skinned bulbs of Onion Supasweet™ are so sweet and juicy they can be eaten raw without being overpowering - ideal for adding to summer salads. Bulbs are best used as required, as they are not renowned for their storage capabilities.

Please note: Onion flavour (its sweetness and mildness) is significantly affected by weather conditions, soil type and its sulphur content. Light, sandy soils produce the highest levels of sweetness, whereas clay and dark humus rich soils can result in bulbs with a stronger flavour. Height: 45cm (18"). Spread: 10cm (4").

 More info
    • 1 packet (200 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.29
Onion 'Taresco' F1 Hybrid

Onion 'Taresco' F1 Hybrid - SowStrong® Collection

Allium cepa
  • NEW in 2013
Onion ‘Taresco’ produces good sized, golden-brown skinned, globe shaped bulbs with crisp white flesh. This productive and reliable variety produces high yields of strongly rooted onions with excellent storage potential. Height: 45cm (18"). Spread: 15cm (6").

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


Useful links:

Companion Planting 

Read more on our blog: SowStrong® – A Natural Way to Growing Success

 More info
    • 1 packet (175 seeds)

    • Despatch: Within 2 Days
    •  
    • £2.49