You need two plants. Take a bloom from one, rub the pollen from that one onto the stigmas of the other plants bloom.
Using one plant won't work with plants that don't self-pollinate.
Barb

Okay, I found this exerpt from the below URL.....under pollination....opinion?

Pollination is the transfer of pollen from an anther to a stigma. In nature this happens frequently with species Hibiscus, either from the same flower - self-pollination or with two separate plants involved - cross-pollination.

http://www.internationalhibiscussociety.org/hiv1n19-1.htm