UK Planting Calendar: What to Sow and Plant Each Month

UK sowing dates are ranges, not appointments. A coastal garden in the south-west and an exposed northern plot can be weeks apart, so combine this calendar with seed-packet instructions, local forecasts and observations from your own garden.

How to use this guide

Start with the sections that match your situation, copy the checklist into your notes and add real prices, dates or measurements. The aim is a working plan, not a perfect list completed in one sitting.

Related guides: create your garden plan · check crop-specific RHS guidance · coordinate seasonal home and garden jobs

January to March

• January: plan rotations, order seed and sow a limited range under protection where suitable.
• February: start selected slow-growing or hardy crops with adequate light.
• March: sow more hardy crops, prepare beds and protect early growth.

Cold, wet soil can rot seed. Waiting for workable conditions can produce stronger plants than forcing a date.

April to June

• April: direct-sow many hardy vegetables and harden off protected plants.
• May: expand sowing and plant tender crops after local frost risk.
• June: sow quick crops in succession, support climbers and maintain watering.

Hardening off gradually acclimatises indoor-raised plants to outdoor wind, sun and temperature.

July to September

• July: continue salad and quick-root sowings and start selected autumn crops.
• August: sow winter salads, spinach and suitable overwintering crops.
• September: plant some overwintering onions or garlic where conditions suit.

Check variety instructions: a crop name may have spring, summer and overwintering varieties with different timing.

October to December

• October: plant suitable garlic and broad beans in appropriate soil and regions.
• November: protect winter crops and improve empty beds.
• December: review notes, clean equipment and plan next year.

Avoid working or walking on saturated soil, which can damage structure.

Adjust the calendar to your plot

• Move dates later in cold, exposed or northern sites.
• Use cloches and protection carefully, with ventilation.
• Track last frost, first frost and soil readiness.
• Record actual sowing and harvest dates.

After two or three seasons, your own notes become a planting calendar tailored to the garden.

UK Planting Calendar at a glance

A step-by-step way to put it into practice

1. Step 1: Check seed-packet variety instructions. Write down the specific figure, date, item or person responsible. A recorded decision is easier to check than an intention kept in your head, and it gives you a clear point to review if the plan changes.
2. Step 2: Watch local frost forecasts. Write down the specific figure, date, item or person responsible. A recorded decision is easier to check than an intention kept in your head, and it gives you a clear point to review if the plan changes.
3. Step 3: Sow small batches. Write down the specific figure, date, item or person responsible. A recorded decision is easier to check than an intention kept in your head, and it gives you a clear point to review if the plan changes.
4. Step 4: Label every sowing. Write down the specific figure, date, item or person responsible. A recorded decision is easier to check than an intention kept in your head, and it gives you a clear point to review if the plan changes.
5. Step 5: Harden off indoor plants. Write down the specific figure, date, item or person responsible. A recorded decision is easier to check than an intention kept in your head, and it gives you a clear point to review if the plan changes.

Complete one pass quickly before trying to improve every detail. On the first pass, capture what you already know. On the second, check documents, measurements, statements or instructions. On the third, attach realistic costs and dates. The final pass is for removing anything that does not apply. This approach keeps a planting calendar UK useful and prevents research from becoming a reason to delay.

How to prioritise when time or money is limited

Sort actions into four groups: safety or legal essentials, tasks that prevent further cost, everyday necessities, and optional improvements. Work through them in that order unless a deadline or professional recommendation requires something different. This gives urgent work a protected place without pretending every item is equally important.

Next, mark each item as “do”, “price”, “ask” or “later”. Do means you can complete it now; price means you need a quote or current cost; ask means another person or qualified professional must clarify it; later means it is intentionally postponed. Delaying an optional purchase is a decision, not a failed checklist.

If the total is unaffordable, reduce scope before reducing safety or skipping essential bills. Look for items that can be borrowed, bought second-hand, repaired, phased or removed. When credit is involved, add the repayment and total borrowing cost to the wider household budget before committing.

Keep the checklist accurate over time

Add a “last checked” date and review the plan after a bill, quote, season, move or routine changes. Replace estimated figures with actual ones and keep links to receipts, photographs, warranties or official guidance. A short monthly review is usually more useful than rebuilding the entire plan once a year.

Progress is easier to see when the list shows completed actions as well as remaining ones. Keep a brief note of what worked, what cost more than expected and what you would change next time. Those notes turn a one-off planting calendar UK into a reusable personal system.

Practical checklist

• Check seed-packet variety instructions
• Watch local frost forecasts
• Sow small batches
• Label every sowing
• Harden off indoor plants
• Water new plants consistently
• Record successes and failures

Common mistakes to avoid

• Treating national dates as local guarantees
• Starting tender plants too early without enough light
• Forgetting succession sowing
• Using the same timing for every variety
• Planting out without hardening off

Make the plan your own

Households, homes, budgets and local conditions differ. Replace generic examples with your own figures and evidence, keep a dated record of decisions, and review the plan whenever circumstances change.

For decisions involving contracts, safety, regulated work, debt or legal rights, use current official guidance and appropriately qualified advice.

Frequently asked questions

When can I plant vegetables outside in the UK?

It depends on crop hardiness, soil and local frost risk. Hardy crops go out earlier than tender beans, courgettes and tomatoes.

What can I sow every few weeks?

Many salads, radishes and other quick crops suit succession sowing, subject to seasonal temperatures and variety.

Why are my dates later than online calendars?

Altitude, latitude, exposure, soil and coastal influence all change conditions. Local success matters more than a national average.

Next step

Choose one action you can complete today, then use the related resources below to continue without losing momentum.

Related guides: create your garden plan · check crop-specific RHS guidance · coordinate seasonal home and garden jobs