Keter Manor Outdoor Apex Double Door Garden Storage Shed (6 x 8ft)
A durable and stylish beige and brown garden storage shed perfect for storing garden tools, equipment, bikes, and outdoor essentials. Weather-resistant, low maintenance, and ideal for any garden or allotment setup.
Vegetable Plants & Seedlings
Browse Plants
All-Purpose Compost & Soil Improvers
View Compost
Plant Feed & Fertiliser for Strong Growth
Shop Fertiliser
❄️🌱 January Seed Sowing Calendar for the UK
🌿 Introduction: What Can You Really Sow in January?
January can feel like a confusing month for seed sowing.
Seed packets tempt you, but cold weather and short days make many gardeners unsure what’s realistic.
The truth is: January sowing in the UK is selective, controlled, and purposeful.
A January seed sowing calendar helps you:
✔ sow the right seeds at the right time
✔ avoid wasted effort
✔ spread the workload
✔ start the year with confidence
This calendar focuses on what you can sow — and where.
Below
⭐ Check Out Our Recommended Products
• Seed Trays & Modules
Perfect for controlled January sowing indoors or under cover.
Click here to see them
• Heated Propagator or Warm Windowsill
Helps germination during cold winter conditions.
Click here to see them
• Garden Fleece or Cold Frame
Essential for protecting early sowings from frost.
Click here to see them
📅🌱 Week-by-Week January Seed Sowing Calendar
🗓️ Early January (1st–10th)
Focus on slow-growing, long-season crops.
Sow indoors:
✔ onions (from seed)
✔ leeks
✔ celery
✔ celeriac
Sow under cover:
✔ broad beans (modules or pots)
Growth will be slow — this is normal.
🗓️ Mid January (11th–20th)
Light levels improve slightly, allowing a few more options.
Sow indoors:
✔ early lettuce
✔ salad leaves
Sow under cover:
✔ broad beans (continue)
✔ spinach
Keep sowings small and well protected.
🗓️ Late January (21st–31st)
Late January offers the widest January sowing window.
Sow indoors:
✔ onions (final sowings)
✔ lettuce (cut-and-come-again)
✔ chillies (with heat and light)
Sow under cover:
✔ peas (hardy, early varieties)
✔ spinach
✔ hardy salad leaves
Only sow warmth-loving crops if you have proper conditions.
🌱🏡 Where to Sow in January
Indoors (best for most sowing):
✔ windowsills
✔ heated propagators
✔ grow light setups
Under cover:
✔ cold frames
✔ unheated greenhouses
✔ polytunnels
Avoid open ground unless weather is unusually mild.
🌱⚠️ Seeds to Avoid Sowing in January
These crops are better left until later.
❌ tomatoes (without lights)
❌ courgettes
❌ cucumbers
❌ sweetcorn
❌ French beans
Sowing these too early usually causes weak, stressed plants.
🌱🧠 Tips for Using a January Seed Calendar Successfully
✔ sow little and often
✔ label everything clearly
✔ expect slow growth
✔ focus on roots, not leaves
January success comes from patience and restraint.
🌟 FAQs
Is January a good month to sow seeds in the UK?
Yes — for selected crops and protected sowing.
Do all seeds need heat in January?
No — many prefer cool conditions.
Will January-sown seeds grow slowly?
Yes — and that’s completely normal.
Can beginners follow a January sowing calendar?
Absolutely — it prevents common mistakes.
Is it okay to skip January sowing entirely?
Yes — but careful January sowing gives a head start.