As I predicted the first buds on my Hoya imperialis ‘Palawan’, which were supposed to have yellow flowers did weaken and fall off.  While it was very disappointing, I have the feeling that I will flower it by year’s end; time will tell!  Below a photo that I took a few days ago of the flowers of Hoya sigillatis, before the corolla was fully reflexed.  I like the natural sunlight coming through the blooms.