Thompson & Morgan

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Onion 'Senshyu' (Autumn Planting)

Allium cepa

Hardy Bulb

 Customer Rating

Autumn Planting.

Onion 'Senshyu' is one of the original Japanese overwintering varieties, which has proven successful for many years. This reliable main crop produces good yields of semi-flat bulbs with straw yellow skins. Height: 45cm (18”). Spread: 15cm (6”).


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


SPECIAL OFFER - To get your onions for buy 1 get 1 free, simply add your chosen packs to your order and your discount will be applied in your shopping basket. Please note, the cheapest pack will be free.
Hurry, offer ends midnight Thursday 30th October or whilst stock lasts.

Useful links:

Companion PlantingHow to grow Onions


Ideal For:
kitchen garden
Flowering Period:
June, July
Position:
full sun
    • 75 onion sets

    • Buy 1 pack get 1 free  
    • Despatch: By end of November 2014
    • £3.99
    • 150 onion sets

    • Buy 1 pack get 1 free  
    • Despatch: By end of November 2014
    • £6.99
Plant onion sets in rows in any firm, well drained soil in full sun. Prepare the planting area several weeks in advance by incorporating some well rotted garden compost to improve drainage and soil fertility. Avoid planting onions on freshly manured soil. On particularly wet ground, try growing onion sets in raised beds. When growing onions from sets, plant the bulbs so that the tip of bulb is just protruding through the soil surface. Leave a space of 10cm (4") between each bulb, and 30cm (12") between each row.
Onion sets are undemanding and require only occasional watering during particularly dry periods. However, rows should be weeded regularly. Harvest onions in late June and July, a week or two after the leaves begin to turn yellow. Choose a dry day to loosen them from the ground with a fork. Leave them on the soil surface for a day or two until they have fully dried in the sun. Once dry, remove the top foliage and store them in a well ventilated, dry position. Bulbs can be stored for several months.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes etc are delivered at the appropriate time for planting and will be stated on the product page or in your order acknowledgement page and email.


Orders for packets of seed incur a P&P charge of £1.95.
Orders which include any other products will incur a P&P charge of £4.95.
Where an order includes both packets of seeds and other products a maximum P&P charge of £6.90 will apply - regardless of the number of items ordered.


Please see our Delivery / P&P page for further details and details of any surcharges that may apply to certain destinations.


For product weight information regarding how we despatch our quantities of potatoes, onions and garlic, please see the table below. Exact weights will depend on the individual variety, as well as the weather and growing conditions experienced by the grower.

ProductMinimum Weight
Potato 5 Tubers165g
Potato 10 Tubers320g
Potato 20 Tubers655g
Exhibitor Grade Potato 10 Tubers475g
Onions 50 Sets155g
Shallots 20 Sets355g
Reviews
  1. they grow on yorkshier pennines

    By philip eastwood 28-03-2012

    we live up on yorkshier pennines and they do realy well hady and only lost about 3 out 50 and up here it gets realy cold frost snow winds this my 2nd yaer of grown them would give but i find them abit small but that only me they taste nice

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