The Carnosa Hoya Wax Plant in 6 Pots The porcelain or wax flower is a commonly grown houseplant. It has long, slender vines covered with waxy deep green leathery leaves sometimes mottled with silver or creamy white. To make this plant appear denser, wrap its sparsely leafed stems around a bamboo trellis and secure it with florist tape or nylon strips. Bright indirect light year-round is ideal. Let the year. between waterings Wax Plants love high humidity and foliage appreciates misting. The flowers are star-shaped in parachute-shaped clusters with a sweet fragrance and can produce a sticky sap. Specifications: Pot size 6. Botanical name Hoya carnosa. Porcelain wax plant with common names