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Description
- Exceptionally large red onion variety
- Deliciously sweet flavour
- Ideal variety for exhibiting
- Good storing qualities
We don't know of any larger red onion varieties than Mammoth Red, and it's certainly a favourite with those who like to exhibit their produce at shows. It's not just grown for the size of the onions though, as it also has a lovely sweet flavour, is versatile in the kitchen, and stores well after the harvest period of late summer and early autumn. Definitely one to try!
Plant out when the danger of frost has passed, 30-40cm apart with a similar distance between rows.
Growing Calendar
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:
Place onion and shallot sets in the soil with their pointed ends facing upwards. This ensures proper growth orientation.
Leave 5 to 10cm (2 to 4 inches) of space between individual onions and 15 to 20cm (6 to 8 inches) between shallots.
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:
Utilise a dibber to create holes in the soil that are the same depth as the plants' original root depth in their cell tray.
Place the plants into the holes, ensuring they sit at the same depth they were in their cell tray.
Gently water the area to facilitate proper settling of the plants into the soil.
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 Type | Delivery Charge | Delivery Charge |
Seed only order | £2.99 | If you purchase any other items you'll be charged the standard delivery rate of £4.95 |
Plants, bulbs & gardening accessories | £4.95 | If we need to split your order into separate deliveries we'll only charge one delivery fee |
Extra large or long plants & heavy items | £9.99 | These 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:
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.