Posted: 18/09/2016 at 13:25
Agree with Pete about growing them in pots. In the UK, it is rarely warm enough for long enough for the plants to crop outside. Pots also warm up faster and are easy to move to somewhere warmer when necessary. I grow mine in a cold greenhouse and in an unheated conservatory often putting them outside in sunny weather. I overwintered several plants (both chillies and sweet peppers) in the conservatory last year and they are far ahead of my seed-sown ones which are only just starting to ripen; I've been eating the overwintered ones for a couple of months. We did have an extremely mild winter though which helped the overwintering. In other years I've lost half or more of them in the conservatory.
These were sown in Feb (pic taken end of July):
These were overwintered (pic taken same time as above):
Both in the conservatory.