Buy 1 Get 1 Half Price

When you add this variety to basket. Discount automatically applies at checkout.

Buy 1 Get 1 Half Price Garden Ready Bedding

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Buy 2 Save £10.00 on This Variety

Use discount code POTM06 at checkout. Hurry While Stocks Last!

3 for 2 on Same Variety 9cm Plants

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Save up to £15 on Bird Care

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Get this item FREE when you spend £10.

Add this product to your basket PLUS a further £10 worth of any products. The free item will be automatically discounted during check out. Hurry! Only available for the first 2,023 orders - ends midnight Monday.

Mix 'N' Match Liquid Feed - Buy 3 Get Third Free

Please add 3 to your basket and the offer will automatically apply at checkout. Available on Marshalls Liquid Feeds.

Buy 1 Get 1 Half Price on same variety Super Plugs

Add 2 of this product to get 1 half price. Discount automatically applies at checkout.

Buy 3 Perennial Garden Ready Plants and get 3rd FREE

Buy 3 get get 3rd free on the same variety and size plants. Please add 3 to your basket and the offer will automatically apply at checkout.

Buy any 3 packs of same variety & size plants and get 3rd free

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3 for 2

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Buy 2 Save £4

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Buy any 2 for £10

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Buy 3 Save £4

Add 3 of this product to your basket and save £4.

Buy 3 Save £10

Add 3 of this product to your basket and save £10.

Free Delivery Valentine's Day Offer

As a Valentine's Special Offer, we are offering this product duo with delivery included. Order by end of Sunday 11th Feb for guaranteed delivery in time for Valentine's Day.

💜 Verbena 'Buenos Aires' - 9cm Pot Offer 💜

Limited Time Offer! Add 3 Plants for £15, usually £23.97. Just £5 per plant! Add 5 Plants for £20, usually £39.95. Just £4 per plant! Add 10 Plants for £35, usually £79.90. Just £3.50 per plant! Discounts automatically apply at checkout.

💜 Buddleja davidii 'Adonis Blue' - 9cm Pot Offer 💜

Limited Time Offer! Add 3 Plants for £15, usually £29.97. Just £5 per plant! Add 5 Plants for £20, usually £49.95. Just £4 per plant! Discounts automatically apply at checkout.

🌸 Limited Time Offer! 🌸

Limited Time Offer! Add 3 Plants for £15, usually £26.97. Just £5 per plant! Add 5 Plants for £20, usually £44.95. Just £4 per plant! Add 10 Plants for £35, usually £89.90. Just £3.50 per plant! Discounts automatically apply at checkout.

Please Note

These seeds should ideally be sown this season. All our packets have ‘Sow by Date’ guidance on them, this is the date the seeds should be sown in order to achieve the highest rate of germination. You will still see the same high-quality plants if sowing in seasons after the ‘Sow by Date’ but may see a reduction in germination rate

🌿 Pre-Order Product 🌿

Please note this product is currently on Pre-order. Please read details below for despatch dates.

Buy 2 for £14.98

Mix 'n' Match Buy any 2 vegetable packs for £14.98. Discount automatically applied at checkout.

🍃 Half Price with Frostgard Roll Purchase 🍃

Get these hoops half price when you purchase Grow it Frostgard Roll 8m x 1.5m or Grow it Frostgard Roll 8m x 1.5m - Duo Pack.

Mix 'n' Match 2 for £12

Buy any 2 9cm Herbs for £12. Discount automatically applied at checkout.

Mix 'n' Match 2 for £10

Buy any 2 1L Herbs for £10. Discount automatically applied at checkout.

Onion Sets Bolt Resistant Collection

Marshalls Garden

£9.97

Catalogue Code: 10406017

Sale price

Pre Order Now - Despatched between 1st and 10th of March

Regular price £9.97
This fantastic heat prepared Onion Collection has been specifically heat-treated for 20 weeks to minimise bolting. Heat preparation will also extend the growth period of the onions so that much greater yields can be achieved.

Key Features

  • Prefers full sun

Pack Contents: Approx 65-75 sets of each variety

Description

This fantastic Bolt Resistant Onion Collection has been specifically heat-treated for 20 weeks to minimise bolting. Heat preparation will also extend the growth period of the onions so that much greater yields can be achieved.

Our Bolt Resistant Collection includes:

  • Rumba - A top performing main crop variety that’s ideally suited to growing in the UK. It produces high yields of large, uniform, round onions with a sweet flavour, making it ideal for eating raw in salads as well as cooking. Good thick skin and quality flesh makes this a good variety for long-term storing.
  • Karmen - Red onion ‘Karmen’ is renowned for the exceptionally sweet flavour of its crisp white flesh, delicious eaten raw in salads or cooked. Each layer of the onion is edged in light crimson, so it looks as good as it tastes! This popular red onion stores well and is a valuable addition to any kitchen garden.
  • Corrado - Vigorous, high yielding and disease resistant, Onion ‘Corrado’ produces a plentiful crop of golden yellow bulbs with excellent flavour. The bulbs are firm with strong skins, and will store well.

*Saving compared to buying individually.

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 Outdoors
Harvest

How to Guide

Planting Onions and Shallots

Prepare the ground with our Pre-Planting Onion, Garlic & Shallot Fertiliser to ensure strong bulb development and growth, early ripening and maturity, good skin and bulb firmness.

Planting Sets:

  1. Place onion and shallot sets in the soil with their pointed ends facing upwards. This ensures proper growth orientation.

  2. Leave 5 to 10cm (2 to 4 inches) of space between individual onions and 15 to 20cm (6 to 8 inches) between shallots.

  3. Create rows of onions with 25cm to 30cm (10 inches to 1 foot) of spacing between them. For shallots, allow 30 to 45cm (1 foot to 18 inches) between rows.

Planting Onion Plants:

  1. Utilise a dibber to create holes in the soil that are the same depth as the plants' original root depth in their cell tray.

  2. Place the plants into the holes, ensuring they sit at the same depth they were in their cell tray.

  3. Gently water the area to facilitate proper settling of the plants into the soil.

Read our full How To Grow Onions and Shallots Guide here.

Delivery

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 £4.95
Plants, bulbs & gardening accessories£4.95If 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)£4.95

These items are subject to a delivery multiplier where orders containing 3 or 4 items will be subject to an additional £4.95 for every further 2 items added. This is automatically applied at check-out:

  • 1 - 2 bags £4.95
  • 3 - 4 bags £9.90
  • 5 - 6 bags £14.85
  • 7 - 8 bags £19.80
  • 9 - 10 bags £24.75

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.

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