Knowing what to plant and when is the key to a successful garden. This UK planting calendar shows you exactly what to grow each month, based on British seasons and weather patterns.
Whether you grow vegetables, herbs or flowers, following a seasonal approach leads to stronger plants, better harvests and fewer problems.
Why Follow a Seasonal Planting Calendar?
Planting at the right time means:
- Seeds germinate more reliably
- Plants grow stronger roots
- Less pest and disease pressure
- Better yields
The UK climate can be unpredictable, so treat this calendar as a guide and adjust for your local conditions.
January – Planning & Indoor Sowing
Outdoor growth is slow, but it’s perfect for preparation.
- Chilli peppers
- Onions (from seed)
- Broad beans (in mild areas)
Focus on seed ordering, cleaning tools and preparing compost.
February – Early Starters
- Tomatoes (indoors)
- Leeks
- Celery
- Early peas
Use a windowsill or propagator for warmth.
March – Spring Begins
- Carrots
- Spinach
- Beetroot
- Lettuce
Start hardening off indoor seedlings.
April – Main Sowing Season
- Potatoes
- Radishes
- Parsnips
- Spring onions
Watch for late frosts.
May – Frost-Free Planting
- Courgettes
- Beans
- Sweetcorn
- Pumpkins
Plant out once frost risk has passed.
June – Summer Growth
- Salad leaves
- Herbs
- Late carrots
Keep watering and mulching.
July – Succession Sowing
- Spring cabbage
- Turnips
- Chard
Fill gaps as crops finish.
August – Autumn Prep
- Spinach
- Spring onions
- Winter lettuce
Harvest regularly.
September – Winter Crops
- Garlic
- Onion sets
- Broad beans
October – Final Sowing
- Winter salads
- Green manures
November – Protect & Prepare
- Cover beds
- Mulch soil
- Clean tools
December – Rest & Plan
- Review successes
- Plan next year
- Order seeds
Beginner Tips
- Start small
- Label seedlings
- Use quality compost
- Keep notes
Final Thoughts
Following a UK seasonal planting calendar helps you work with nature instead of against it. Small timing changes make a big difference to success.
FAQ
Can I plant earlier if the weather is warm?
Yes, but protect young plants from sudden cold snaps.
Do I need a greenhouse?
No, but it helps extend the season.
Is this calendar suitable for allotments?
Yes – it works for gardens, allotments and raised beds.
