2inch. Hoya nummularioides (what a tounge-twister!) is an uncommon Hoya that is native to Cambodia. It produces small, fuzzy, green leaves that are round to oval with pointed tips. Hoya nummularioides is happy grown on a trellis or in a hanging basket. Provide bright indirect, light and allow soil to fully dry between waterings. Plant comes fully rooted in a peat-free tropical plant soil blend.