Hoya pubicalyx is a woody epiphyte or scrambling shrub and can reach a length up to several meters in its tropical habitat. Glabrous through-out excepting the inflorescence. The leaves are narrow and have more or less silver flecks, depending on which variety it is. 'Pink Silver' has a lot of flecks, while 'Red Button' has less making the plant quite decorative when nor blooming. There are many varieties in circulation that bear slightly different coloured flowers all sharing the nice foliage. The colour of the flowers vary from pink-red with white corona to almost black with red coronas, and often the plant produces pink-red, spotted and black flowers in the same umbel and all are quite fragrant.