When should I sow chilli seeds in the UK?

Chilli seeds are best sown from January to March indoors with heat. Super hot varieties need the longest season, so early sowing gives plants enough time to mature and fruit.

What temperature do chilli seeds need to germinate?

Chilli seeds germinate best between 25°C and 30°C. Using a heated propagator greatly improves success rates, especially for super hot chilli varieties.

How long do chilli seeds take to germinate?

Most chilli seeds germinate within 7–14 days, but super hot chillies can take up to 4 weeks. Consistent warmth and moisture are essential for successful germination.

Why are super hot chilli seeds harder to grow?

Super hot chillies come from Capsicum chinense plants which naturally require higher temperatures, longer growing seasons, and stable conditions compared to standard chilli varieties.

Do chilli plants need a greenhouse in the UK?

While many chillies can grow on a sunny windowsill or patio, super hot varieties perform far better in a greenhouse or polytunnel where they receive consistent warmth.