Onion Seeds 'Japanese Hi Keeper'
Onion Seeds 'Japanese Hi Keeper'
Onion Seeds 'Japanese Hi Keeper'
Onion Seeds 'Japanese Hi Keeper'

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Onion Seeds 'Japanese Hi Keeper'

Allium thunbergii

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.

Marshalls Garden

60 Seeds

30310664

In stock

£3.49

Fast Delivery – Next Day Despatch Seed Only Delivery From £2.99* | Learn More

Fast Delivery – Next Day Despatch Seed Only Delivery From £2.99*

Seed Only orders £2.99 delivery when buying 3 or more.

Less than 3 seed packet only orders will require £6.99 delivery charge. Buy 3 or more Seed Packets and receive discounted delivery at £2.99.

When showing as 'In Stock' on the website product page, products are dispatched next day by our expert team  of placing your order, (Sunday to Friday).

To ensure your seeds arrive in the freshest condition and undamaged, they are carefully packed in specially designed, fully recyclable packaging.

For larger seed orders we use Yodel express delivery to ensure you receive your package within 3 days of placing your order with the addition of it being fully tracked for your peace of mind.

 

Key Features

Marshalls Garden

High Yield

Marshalls Garden

Hardy

Marshalls Garden

Low Maintenance

Product Information

Eventual Height:

30cm

Position:

Full Sun

Suitable for:

Pots, Window Sill, Patio, Small Gardens, Borders, Vegetable Plot, Window Boxes, Raised Bed

Plant Type:

Annual

Soil Type:

Loose, free-draining, rich in organic matter, pH 6.0-7.0

Complete The Job

Growing Calendar

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Sow Indoors

Sow Indoors

Sow Outdoors

Sow Outdoors

Harvest

Harvest
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.

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

How To Grow

Onions are a staple crop for any home gardener and one of the most rewarding vegetables to grow from seed. Whether in large garden beds or patio containers, they thrive with just a little care. From sweet and red onions to spring onions and shallots, each type adds its own unique flavour to the kitchen. Start seeds indoors early for a strong head start and choose a sunny, well-drained spot for planting. Keep soil moist but not waterlogged for the best growth.


Indoor Sowing
Fill a half seed tray with fine-textured seed compost and lightly scatter seeds across the surface without overcrowding. Cover lightly and keep moist. A heated propagator or heat mat provides consistent warmth, encouraging quick germination and strong root growth.


Planting Out
Transplant seedlings 1cm deep, spacing 10cm between plants and 30cm between rows. Rotate crops each season to avoid soil-borne pests and diseases, and avoid planting onions or related crops (leeks, garlic, shallots) in the same spot more than once every 3–4 years.


Interplanting
Onions store well, so one sowing is usually enough. Use the spaces between rows to grow carrots, cabbages, or lettuce. Their strong scent naturally deters pests like carrot flies and aphids. Companion herbs such as mint and parsley also help keep onion flies away.


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When you order from us, expect promptness. 'In stock' plants and seeds are dispatched within two working days. And because we're as green as our thumbs, all our packaging is recyclable.


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