Succession sowing guide, best varieties, and regional timing for radishes in UK gardens and allotments.
Ready to start growing? Read our full How to Grow Radishes UK →
Sowing dates and growing advice verified against RHS guidance by the SoilCommander Growing Team.
Radish Planting Calendar UK
| Task | Timing | Notes |
|---|---|---|
| First outdoor sow (under cloche) | Late Feb – March | Soil temp min 6°C; cloche or fleece recommended |
| Main outdoor sowing season | March – August | Sow every 2 weeks for continuous harvest |
| Winter radish sow | July – August | Mooli/daikon types; harvest October–December |
| Harvest (summer types) | April – October | Ready in 3–6 weeks; harvest promptly before they bolt |
Key Tips
- Succession sow every 2 weeks — radishes mature in 3–6 weeks and deteriorate fast if left in the ground
- Avoid sowing in midsummer heat — high temperatures cause bolting; resume in August for autumn crop
- Harvest promptly — don't wait for them to get bigger; they become woody and hot
- Great companion for carrots — germinates first to mark the row and break soil
Browse all sowing dates in the UK vegetable planting calendar · Explore all UK vegetable growing guides
Relevant next steps
Plan The Timing Before You Sow
Use the planting window with a planner, seed-starting setup, and the full calendar so dates stay practical for your garden.
Plan the next step
Use the printable UK Vegetable Garden Planner to turn this guide into sowing dates, bed layouts, and weekly garden tasks.