This is of the unnamed species that I have in my collection. It is a climbing species which climbs to the top of the greenhouse where it will flower, so grab a ladder if you want to see them. It can take plenty of heat and light. It is a fairly easy species to grow despite a liking for warm conditions. Do not worry about the drops that will fall down from the flowers; they are nectar drops. Just make sure you do not place the plant above your favourite piece of antique furniture.
The plant is easily propagated by cuttings, preferably taken in July when they will root without bottom heat.

 

Hoya sp. Sarawak GPS 10073

Hoya sp. Sarawak GPS 10073