Hoya Retusa, aka Grass Leafed Hoya, has extremely slim and flat foliage that can look kind of scraggly and awkward in its younger years but as the plant fills out, it looks beautiful in a hanging planter. You may even notice that its leaves don’t look like regular leaves! With some patience and the appropriate care, your plant may reward you with singles, rather than clusters, of creamy, star-shaped, fragrant flowers.