Here is a 50 second time-lapse of the flowers opening on Hoya engleriana.  This was one of the toughest videos that I ever made.  The flowers just didn’t want to open under 24/7 lighting and also kept turning away from the camera.  I ended up taking, get ready for this, 7,500 photographs of which I only used around 150 to make the film.  This video is dedicated to Julie Kennedy for giving me the plant.