Autumn Planting Onions

Autumn planting onions are a great option for beginners and seasoned gardeners alike. Onions are low maintenance and don’t take up too much space. They will thrive in various garden settings, from the open ground to raised beds and containers.

In just a few months after planting, you'll be rewarded with a harvest that's as satisfying as it is delicious. From garden to kitchen table, you'll relish the joy of crafting hearty dishes with your very own home-grown, aromatic onions.

Our selection of autumn planting onion varieties includes trusted classics and exciting, more exotic options. Each onion is nurtured from disease-free stock, ensuring the highest quality at the right price. Buy autumn planting onions from Marshalls Garden today.

· A wide variety of reliable autumn planting onions for sale, handpicked for your success.

· Perfect for ground planting, raised beds, containers, and grow bags – your options are endless.

· Delivered in planting season, so you have one fewer job to remember.

· Our friendly team is here to assist you six days a week, including bank holidays.

Find UK autumn onion sets for sale

Our onion sets for autumn planting are backed by our 100% satisfaction guarantee. With 75 years of experience on our side, we're confident that we can help you get the most from your crop.

Choose from multiple varieties of autumn planting onions and browse our autumn planting shallots and autumn planting garlic for the full allium experience! We also stock variety packs with all three for your convenience.

Need any tools or equipment to help you make the most of your garden? We stock a huge range from leading brands, all available with rapid delivery as standard.

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Autumn planting onions FAQs

When to plant autumn onion sets in the UK?

As the name suggests, October and November are the best time to get autumn onions in the ground. Buy onions to plant in autumn from Marshalls Garden and we'll onlysend them when they are ready to be planted.
This is typically from mid-October.

When to harvest autumn planted onions?

Plant onion sets in autumn for a summer harvest, generally in June and July the following year. This will give you a bountiful supply for classic pasta dishes androasted vegetable trays – the perfect BBQ accompaniment! Onions' foliage will turn yellow when they are ready to be lifted, so there's no need for guesswork on your part. Once lifted, onions should be cleaned and dried for a week or two. This helps to mature the flavour and also prepares them for storage if necessary.

Can I plant autumn onion sets in spring?

Autumn planting onions should still perform if planted the following spring. The resulting crop may be slightly smaller and they're likely to be ready for harvest later in summer or into early autumn.

How to plant autumn onion sets in the UK?

Plant onions in rows 5cm to 10cm apart with around 30cm between rows. Keep the root zone well-watered. Horticultural fleece can protect from birds, although onion plants are hardy so frost is less of a concern. Weed the surrounding area by hand, doing so with a hoe can damage the bulbs and root system.

Check out our full guide to growing onions in the UK.

Why buy autumn planting onions from Marshalls Garden?

You’ll receive top-notch support from our team of gardening experts. With 75 years of experience, our growing guides are designed to help you achieve the best results withyour autumn planting onions.
Reach out to us six days a week – even on bank holidays – to discuss your autumn onion planting needs or to chat about gardening in general.
Your autumn planting onion sets will be delivered exactly when they’re ready to go into the ground, avoiding wastage and helping your crop thrive.
Our commitment to quality was recognised with silver at the 2022 Great British Growing Awards for Best Online Retailer.
An 'Excellent' rating on Trustpilot and 100% satisfaction guarantee speak for themselves – thousands of gardeners trust us with their autumn planting onions andmuch more.