Onion Red Baron Seeds
Allium cepa ‘Red Baron’
£1.39
In stock
Free delivery on small seed packets when you spend £20 on seeds, otherwise £3.50 tracked.
Grow deep blood-red onions with Red Baron Onion Seeds. This RHS award-winning variety produces slightly flattened globe-shaped bulbs that store well into the new year. Perfect for allotments and home gardens alike.
Average Packet Contents: 250 Seeds

Next: sow under cover from January See the growing calendar
When to grow it
- Sow under cover: January to April
- Direct sow: March to April
- Plant out: April to May
- Harvest: August to September
How to Grow Onion Red Baron Seeds: Your Step-by-Step Guide
Beginning Your Onion Adventure
Consider Onion Red Baron Seeds for a splash of colour in your vegetable patch. These deep blood-red, globe-shaped onions are an RHS award-winning variety, perfect for any garden or allotment.
When and Where to Sow
For the best results, aim for indoor sowing from February to April. Outdoor sowing can be done in April. Here are some quick tips:
- Sow seeds 1.5cm deep in rows spaced 30cm apart.
- Maintain a constant temperature of around 14°C.
Nurturing Your Onion Seedlings
Indoor Seedling Care
Once germinated, transplant the seedlings into individual pots or trays. By April, they should be ready to move to a cold frame to harden off.
Outdoor Seedling Care
For outdoor sowing, thin your plants until they are 15-20cm apart.
Getting Ready for Harvest
Harvest Time
Your Onion Red Baron will be ready for harvest from August to September. These onions are perfect for adding a pop of colour to salads when sliced horizontally.
Additional Tips and Nutritional Info
Onion Red Baron is not just a pretty face; it’s also packed with health benefits. Here’s what you get:
- Antioxidant properties
- RHS award-winning quality
Soil Prep
To get the most out of your Onion Red Baron Seeds, prepare the soil well. A fertile, well-drained soil is key. Consider adding compost or manure to enrich the soil.
Reviews
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Wow these are the best seeds. Sown just last week and loads are coming through already.
Jacqueline Cumming Verified buyer
I have grown this before wonderful
Angela Verified buyer
Look forward to boxing day
Sue Creese Verified buyer
Been told these are great seeds from people on you tube channels so giving them a try
Kenny Tait Verified buyer
Great price quick delivery and germination in 5 days
Neil Robinson Verified buyer
Great quality seeds
cherain Verified buyer