Certified GKH Gardening Expert
These require lots and lots of light to produce correctly. Like tomatoes, they like to have temperatures that remain constant between day and night. After these requirements are met, flowers will become prolific. When this happens, it is as simple as lightly tapping the flowers, or shaking the branch. On many occasions, these will pollinate themselves without and outside help. If they are still not bearing fruit, there could be another issue.