Planning a successful garden in 2025? Timing is everything. Whether you’re sowing vegetables, nurturing herbs, or planting a flower border, knowing what to grow—and when—is the key to a bountiful harvest. That’s where a month-by-month planting calendar comes in.
This planting calendar for UK gardens for 2025 is tailored for British weather and seasonal cycles. It breaks down what you can sow and plant each month, helping both beginner and seasoned gardeners stay organised, efficient, and productive throughout the year.
Keep this guide handy to plan ahead and ensure your garden thrives, from frosty January to festive December. Let’s dig in!
2025 Garden Planting Overview
| Month | What to Plant or Sow |
|---|---|
| January | Broad beans (indoors), onion sets (undercover) |
| February | Chillies, tomatoes, sweet peas (indoors) |
| March | Carrots, peas, spinach, beets, early lettuce |
| April | Brassicas, leeks, courgettes, wildflowers |
| May | Tomatoes, cucumbers, runner beans |
| June | Chard, French beans, salad leaves |
| July | Kale, beetroot, autumn carrots |
| August | Spinach, radish, spring cabbage |
| September | Winter lettuce, mustard greens, garlic prep |
| October | Garlic, overwintering onions |
| November | Broad beans, cover crops, tidy perennials |
| December | Order seeds, garden planning |
Month-by-Month Planting Calendar for UK Gardens (2025)
January
Kick off the gardening year by sowing broad beans indoors and placing onion sets under cover. Now is the perfect time to review last year’s garden notes and plan for the coming months.
February
Sow chillies, tomatoes, and sweet peas indoors with heat. Start prepping your garden beds if the weather allows.
March
This is a busy sowing month. Direct sow carrots, peas, spinach, and beets. Undercover, start lettuce, kale, and early brassicas.
April
Time to sow leeks, courgettes, wildflowers, and start transplanting seedlings. Prepare your soil with compost to support new plantings.
May
With frosts behind us, you can now plant tomatoes, cucumbers, squash, and beans outdoors. Harden off indoor-sown seedlings gradually.
June
Sow chard, French beans, lettuce, and basil. Maintain regular watering as temperatures rise.
July
Sow autumn crops like beetroot, kale, and carrots. It’s also a great time for succession sowing to extend your salad harvest.
August
Direct sow radish, spinach, spring cabbage, and winter salad greens. Feed your soil with mulch to prepare for the cooler months.
September
Focus on winter sowing: mustard greens, winter lettuce, and spring onions. Start planting garlic for next summer’s harvest.
October
Plant garlic cloves and overwintering onion sets. Add mulch or fleece to protect tender seedlings.
November
Start sowing broad beans and planting cover crops like field beans or rye. This helps nourish and protect your soil over winter.
December
Wind down the year with garden planning, tool cleaning, and ordering seeds. Reflect and prepare for a more productive 2026.
Tips for Year-Round Garden Success
- Start early indoors using heated propagators or sunny windowsills
- Use fleece or cloches to extend your growing season
- Practice crop rotation to maintain healthy soil
- Feed your beds with organic compost or manure
- Track your planting dates in a gardening journal
Need help prepping your plot? Read our full guide on how to prepare garden soil.
Final Thoughts
Whether you’re growing veg in raised beds or herbs on a windowsill, this planting calendar for UK gardens for 2025 gives you the structure and confidence to grow year-round. From early sowings to winter prep, each month offers opportunities to cultivate, harvest, and enjoy your garden space.
Stay tuned to piGardening.co.uk for more seasonal tips, guides, and free downloads to help your garden thrive in every season.