Hittade detta när jag försökte hitta lite hoyanamn.
http://members.tripod.com/asia_flora/Hoya1.htmDet verkar som om det finns hoyor som förökar sig med frö.
"Natural seed setting is usually not very common but in my nursery in Singapore, species like H. verticiliata, lacunosa and kerri (left) have done so. The seed pods contain many tufted seeds which are dispersed by air. Germination rate is high but few seedlings survive to maturity if left on their own in my nursery"