Hoya davidcumingii is still never without flower and growing strong two years after converting it to semi-hydroponics.  Couldn’t keep this one going in soil no matter what I did.  Now in S-H grows like a weed.  I water this plant once or twice a day (yes that is day and not week) and keep it in the warm, humid plant room.  I have recently started more cuttings in s-h that have not made it using conventional methods.  I will report on their progess as they begin to take hold.  Here is hoya davidcumingii from this week.