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Onion (Japanese) 'Hi Keeper' Seeds



Catalogue Code: 30310664

Sale price

In stock

Regular price £3.49
Onion Japanese Hi Keeper Seeds make mild, yellow-brown-skinned onions. Delicious in salads or cooked dishes. Keeps long in storage when left out to dry.

Key Features

  • Prefers full sun

Pack Contents: 60 Seeds

Height: 30cm


Unwins Onion Japanese Hi Keeper Seeds produce mild flavoured onions with a hard yellow brown skin. Perfect for adding to a salad or cooking into one of your favourite dishes.

If left out to dry, these onions will keep well in storage during the winter months.
  • Stores well
  • Spring or Autumn sowing
  • Hardy variety

Sowing Indoors
Almost fill a seed tray or modules with moist seed compost. Sow seeds thinly and cover with a little more compost. Place in the warmth, 15-20°C.

Growing On
Keep seedlings in a light position, but out of direct sunlight. When large enough to handle, transplant 5cm apart in to trays of potting compost.

Hardening Off/Planting Out

Gradually accustom plants to outside containers for 2-3 weeks before planting out to their cropping positions. Space plants 15cm apart with 30cm between rows.

Sowing Outdoors
Sow seeds thinly in a pre-watered shallow row, lightly covering with a little soil. Keep moist in dry spells.

Thin seedlings to 15cm apart to allow full development of the bulbs.

Growing Calendar

J Jan F Feb M Mar A Apr M May J June J Jul A Aug S Sep O Oct N Nov D Dec
Sow Indoors
Sow Outdoors


We know how important your garden is to you. We've listened to our customers and introduced a new improved speedy delivery service, meaning Express delivery comes as standard.

*Orders to Northern Ireland have an automatic additional £3.00 delivery surcharge applied at checkout. 

Order TypeDelivery ChargeDelivery Charge
Seed only order£2.99If you purchase any other items you'll be charged the standard delivery rate of £5.99
Plants, bulbs & gardening accessories£5.99If we need to split your order into separate deliveries we'll only charge one delivery fee
Extra large or long plants & heavy items£9.99These are clearly displayed at check-out
Compost (and any other large or heavy items)£5.99

These items are subject to a delivery multiplier where orders containing 3 or 4 items will be subject to an additional £5.99 for every further 2 items added. This is automatically applied at check-out:

  • 1 - 2 bags £5.99
  • 3 - 4 bags £11.98
  • 5 - 6 bags £17.97
  • 7 - 8 bags £23.96
  • 9 - 10 bags £29.95

If you'd like more than 10 bags of compost please call our Customer Service team who can arrange for a bespoke competitive quote on 01480 774555 (standard network charges apply)

For more detail on specific delivery queries and compost delivery please click here

Delivery to outside of Great Britain

We regret we are unable to deliver any items outside of some Great Britain delivery addresses. This includes Europe, Channel Islands, Republic of Ireland, USA and Rest of World. We will update our website if this changes. 

We now deliver to Northern Ireland, additional delivery surcharges automatically apply at checkout. 

For more information about our deliveries please click here.