Chillies bring heat and colour, from mild to fiery. They need warmth to thrive.
When to Sow
- Sow Jan–Mar indoors.
- Transplant to tunnel May–Jun.
How to Grow
- Plant 45cm apart.
- Pinch out growing tips for bushy plants.
- Water regularly and feed with tomato fertiliser.
Harvesting
- Harvest Aug–Oct.
- Pick when fruits reach full colour.
Polytunnel Growing Tips
- Essential in UK climate for reliable harvests.
- Heat-loving; thrive under cover.
- Provide ventilation to reduce humidity.
Quick Tips Recap
- Sow: Jan–Mar
- Spacing: 45cm
- Harvest: Aug–Oct
- Polytunnel advantage: Reliable cropping, extended season
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.


