Special Offers
Flowers & Plants
Seeds
Fruit & Vegetables
House Plants
New & Trending
Tool Shed
Outdoor Living
Garden Tips
Back to Seeds
All Seeds
Back to Seeds
All Flower Seeds
Hardy Annual Seeds
Half-Hardy Annual Seeds
Perennial & Biennial Seeds
Wildflower Seeds
Cosmos Seeds
Marigold Seeds
Nasturtium Seeds
Petunia Seeds
Poppy Seeds
Sunflower Seeds
Sweet Pea Seeds
Royal Botanic Gardens, Kew, Seeds
National Trust Flower Seeds
Mr Men & Little Miss Seeds
New Flower Seeds
All Other Flower & Shrub Seeds
All Seeds
Flowers to Sow in January
Flowers to Sow in February
Flowers to Sow in March
Flowers to Sow in April
Flowers to Sow in May
Flowers to Sow in June
Flowers to Sow in July
Flowers to Sow in August
Flowers to Sow in September
Flowers to Sow in October
Flowers to Sow in November
Flowers to Sow in December
Back to Seeds
All Vegetable Seeds
New Vegetable Seeds
Pea & Bean Seeds
Pepper (Sweet) & Chilli Seeds
Carrot & Parsnip Seeds
Cucumber Seeds
Spinach Seeds
Tomato Seeds
Brassica & Leafy Green Seeds
Herb Seeds
Salad Seeds
Onion & Leek Seeds
Pumpkin, Squash & Courgette Seeds
Beetroot & Chard Seeds
All Other Vegetable Seeds
Royal Botanic Gardens, Kew, Seeds
National Trust Vegetable Seeds
Mr Men & Little Miss Seeds
Vegetables to Sow in January
Vegetables to Sow in February
Vegetables to Sow in March
Vegetables to Sow in April
Vegetables to Sow in May
Vegetables to Sow in June
Vegetables to Sow in July
Vegetables to Sow in August
Vegetables to Sow in September
Vegetables to Sow in October
Vegetables to Sow in November
Vegetables to Sow in December
Back to main
Garden Tools & Equipment
Garden Machinery
Garden Compost
Garden Worms
Plant Pots
Garden Irrigation & Watering
Fertilisers
Plant Protection
Hanging Baskets
Pest Control
Back to Tool Shed
Garden Tools & Equipment
Back to main
Garden Furniture
Building and Fencing
Landscaping
Garden Living
Water Features
Patio Heaters
Wild Bird Food
Bird Care Accessories
Bird Feeders
Wildlife Havens
Back
Back
Garden Sheds
Wooden Sheds
Metal Sheds
Log Cabins
Summer Houses
Play Houses
Log Stores
Greenhouses
Metal Greenhouses
Wooden Greenhouses
Mini Greenhouses
Grow Tunnels
Cold Frames
Accessories
Greenhouse Guides
Back
Back
Gardening Advice
Grow Your Own Magazine Subscription
How To Gardening Guides
Kids Grow - Gardening with children
What To Do In The Garden This Month
Pruning Guides
Plants for a Purpose
Seed Sowing & Growing
What seeds should I be sowing now?
Video Library
Wildlife Gardening
Garden Pests & Diseases
Back
House & Garden Plants
Annuals
Bedding plants
Begonias
Climbing plants
Conifers
Dahlias
Evergreen plants
Fuchsias
Gardening for wildlife
Geraniums
Grasses
Hanging baskets
Houseplants
Hydrangeas
Lawn Care
Patio plants
Perennials
Petunias
Plants for pollinators
Plants for a purpose
Plants for shade
Shrubs
Roses
Spring flowering bulbs
Summer flowers
Sweet peas
Trees & hedges
Wildflowers
Winter Flowers
Onion Collection (Spring Heat Treated)Allium cepa
Hardy Bulb
What is Hardy Bulb?
Plant that grows from an underground storage organ.
Generally supplied in a dormant condition with no top growth.
Capable of withstanding outdoor winter temperatures down to -15C.
Plant that grows from an underground storage organ.
Generally supplied in a dormant condition with no top growth.
Capable of withstanding outdoor winter temperatures down to -15C.
£9.99
Minimise bolting
Including our most popular red onion
And a yellow-skinned variety for all-round kitchen use
Delivery Information
View Product Description
Out of Stock
Loading...
Height Up to 45cm (18in)
Spread Up to 15cm (6in)
Hardy Bulb
kitchen garden
full sun
JAN
FEB
MAR
APR
MAY
JUN
JUL
AUG
SEP
OCT
NOV
DEC
Harvest Months
Try this instead
Description
How to Grow
Onion (Spring Heat Treated) Collection provides you with two reliable and vigorous onion varieties, one white and one red, to meet all of your kitchen needs. Our heat-treated sets minimise the risk of bolting and guarantee a great onion harvest. The collection comprises:
- Onion 'Hysky' (Spring) - Yellow-skinned bulbs with good skin quality which means they will store for many months.
- Onion 'Red Ray' (Spring) - An improvement on the popular ‘Red Baron’. It has deep red skins and firm, sweet flesh.
Height: 45cm (18"). Spread: 15cm (6").
Companion planting: Try growing onions with mint to confuse and deter onion fly.
Useful links:
Companion Planting How to grow Onions
Pack size info: 250g equates to approximately 75 onion sets.
Show Codes
500g Sets (250g Of Each Variety) (KC2340)
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.
More Info 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.
Delivery
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 or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.
Orders for packets of seed incur a delivery charge of £2.99.
Orders which include any other products will incur a delivery charge of £6.99.
Where an order includes both packets of seeds and other products, a maximum delivery charge of £7.99 will apply - regardless of the number of items ordered.
Large items may incur a higher delivery charge - this will be displayed in your shopping basket.
Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.
For more information on how we send your plants please visit our Helpful Guide on plant sizes.
Recently Viewed
Sign Up For Exclusive Special Offers
About us
Customer Help Centre
Planting & Cultural Advice
Job Vacancies
Privacy Policy
Cookies
Environmental Policy
Terms & Conditions
Our Gardening App
T&M Marketplace
Affiliate Program
Group Scheme
Product Reviews
Delivery
Quick Shop
Gender Pay Gap
Modern Slavery Act
Gardening Club
eGift Vouchers
Request a Catalogue
Retail Enquiries
Seed Stockists
Press & Media Resources
Wholesale Enquiries
Promotional Seeds Enquiries
Ukraine Appeal
© 2023 Thompson & Morgan. All rights reserved. A division of Branded Garden Products Limited.
