Posted: 14/10/2016 at 16:48
pbff..........I grew a Hoya carnosa from seed many years ago. Can't recall exactly but I would have sown in whatever was the best seed compost in the mid 90's and given bottom heat by placing the pot/tray on my heated bed in G/H in Spring/early summer. Since the original, each time I moved house I took cuttings which are pretty easy to do.
Not a great deal of help I know but best of luck anyway