I thought that my discovery of Hoya carmelae flowering quickly when subjected to a shorter day length was a good one, but my friend Julie Kennedy from the UK hung hers in a window in her house and it bloomed continually. All I know is that I fooled around with this plant for almost 10 years without so much as a peduncle when there were too many hours of day light. All I can say is that if you have struggled with trying to bloom this plant I encourage you to try my little trick.
Hoya carmelae takes up very little room and has outstanding foliage when subjected to high light. If you can get it to bloom, the flowers are delightful. I give this sweet little Hoya my highest recommendation!