What to sow in January
January is for planning, not panicking. The soil is cold, the days are short, and the best thing you can do is resist the urge to sow everything. But there are a few crops that actually want to go in now — and getting them started gives you a head start on spring.
Your timing depends on where you are
The last frost date in Cornwall can be three weeks earlier than the Highlands. That changes when you can safely plant out tender crops — and when you need to start seeds indoors.
| Location | Last frost | Days behind Cornwall |
|---|---|---|
| Cornwallmildest — coastal Gulf Stream | 7 April | — |
| Londonurban heat island | 19 April | +12 |
| Bristolsouth-west, sheltered | 18 April | +11 |
| Birminghammidlands | 24 April | +17 |
| Manchesternorth-west | 30 April | +23 |
| LeedsYorkshire | 2 May | +25 |
| Edinburghcentral Scotland | 13 May | +36 |
| InvernessHighlands — latest frost | 22 May | +45 |
These are estimates based on latitude and coastal proximity. Enter your postcode on our frost map for a date specific to your plot.
Sow indoors this month
These crops want warmth to germinate. A windowsill, heated propagator, or greenhouse will do.
Drop seedlings into deep holes and just water in — no need to fill the hole. They'll fatten up on their own.
Needs: Sun or partial shade. Rich, well-drained soil.
- Musselburgh — Tough-as-nails Scottish classic
- King Richard — Early variety, long white stems
Companions: Carrots, Celery
See recommended kit →These sowing windows close by the end of January. If you want them this year, now is the time.
- Leekssow indoors — 11 days left
What kit you will need
If you are starting seeds indoors this month, you will want a heated propagator, good seed compost, and decent modules. We have tested and reviewed the kit that actually matters.
Browse all recommended kit →Get personalised dates for your postcode
Every plot is different. Enter your postcode and we will calculate your frost date and tell you exactly what to sow right now.
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