Radishes are one of the quickest and easiest crops, adding bite to salads.
When to Sow
- Sow Mar–Sep outdoors.
- Sow under cover Oct–Mar for winter crops.
How to Grow
- Sow thinly in rows 15cm apart.
- Thin seedlings to 3cm apart.
- Keep soil moist to prevent woody roots.
Harvesting
- Harvest 4–6 weeks after sowing.
- Pull roots when golf ball sized or smaller.
Polytunnel Growing Tips
- Perfect for quick winter crops under cover.
- Succession sow for continuous supply.
Quick Tips Recap
- Sow: Mar–Sep outdoors, Oct–Mar in tunnel
- Spacing: 3cm
- Harvest: 4–6 weeks
- Polytunnel advantage: Year-round cropping
EasyBuild: Design Your Polytunnel in Minutes!
Thinking of getting a polytunnel? Don’t just take our word for it, try the EasyBuild Configurator and compare for yourself.
We built EasyBuild to make polytunnel growing easier, tougher, and better value. Looks like it worked.


