January has low light levels and colder temperatures in the UK as it is the Winter season.

However there is one vegetable that once germinated indoors or in a greenhouse, doesn’t mind growing in the cold until Spring, that’s the Onion.

Ever since growing my whopper size onions last August, I seem to have a new obsession with Onions.

This year I would like to grow Onions from Seed to see how it differs from growing from Sets (baby onions).

Benefits of Seed Sowing Indoors

There are number of benefits to sowing seeds indoors at this time of the year:

• It can cheer you up from the cold wet Winter,
• It can remind you of warmer times of Spring growth,
• It can get you and children excited about seedlings popping up from the soil.

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Onions, not your thing? Don’t worry, there’s a few other things you can sow in January here – Seeds To Sow in January Indoors

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Onion Seed Sow Along – Sow 10 – 31 January

If you are itching to start sowing, try Onion seeds indoors on a sunny windowsill. As they are cold loving, they will be able to go outside in a greenhouse or cold frame in March to make room for sowing Tomatoes!

WATCH ‘Sow Onions With Me’ Video NOW !

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Download a Free Checklist

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What will you need for the Onion Seed Sow Along?

• Windowsill Seed Tray or cell tray with Lid – I’m using 12 cell Tray with Lid from Amazon.
• Onion Seeds (see variety choice below), I’m sowing Bonus F1 Onion variety bought from Amazon.
• Multi-purpose peat free compost or seed compost,
• A little bit of water and a small watering can,
• A Warm and light windowsill indoors.

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Sowing Onions from Seed – Varieties

I’ve chosen Onion – Variety: Bonus F1 to sow this year.

Bonus F1 – has Downey mildew resistance. As it is a F1 variety, all bulbs will be uniform in size and harvest at the same time.

The following varieties can be sown in January & February for a Harvest in August to September.

Onion Seeds can be purchased from a wide range of online seed suppliers or local garden centres.

Red Onions

• Kamal F1 – Mildew resistance.
• Red Baron – Excellent flavour.

Brown Onions

• Alisa Craig – Great storer.
• Santero F1 – resistant to Downey Mildew.
• Bedford Champion – Great storer.
• Walla Walla – Low sulphur so less tears.
• Globo – Giant onions, if sown in January.
• Bonus F1 – resistant to Downey mildew and low sulphur.

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Onion Varieties to Sow in January & February

(Click on the photos to read the text)

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Growing in January

Seeds to Sow in January Indoors

🪟 A Simple Seed Sowing Setup Indoors

Events – Seed Sow Along Schedule

🌱 Seed Sowing HQ – Other Jobs for January

🧅 Planting Onion Sets in Cell Trays – Video

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The Onion Series

Sowing Onion Seed Indoors in January – Video

Onion Seeds have Germinated – 5-12 Days – Top Tip Video

Part 1 📕 – Start Growing Onions in wet weather in cell trays with Planting Video

Part 2 📗 – How to Plant Onion Sets in the Ground that have been grown in Cell Trays with Video

Part 3 📘 – Onions from Sets – How To Tell when Your Onions are Ready for Harvest

Part 4 📙 – How To Harvest Onions & Make Your Own Drying Rack

🧄 Growing Garlic with Onions and Leeks

📒 The Essential Guide to Growing Autumn & Spring – Onions from Sets – My Free Ebook

Plant Shallots with Me with Video

All About Growing Onions Page