'The chilli plant is usually fertilised by insects outside, however if you are growing your plants indoors then you will need to use a small pollination brush to gently pollinate new flowers in order to maximize your chilli crop yield.

The pollen the plant produces is usually ready to be picked up by the insect in the late afternoon, so at this time you can pollinate the plant yourself.

To pollinate the plant yourself, take a small clean brush, like the ones used in Watercolour painting. Dampen the brush, pick up the pollen, and gently transfer it to the centre of the flowers on your plant. Repeat this with all the flowers on the plant.' Source: Chilli Willy - Full Chilli Growing Instructions for Growing Chillies | Growing Peter Peppers!... I hope that's some help to you Vince