Common Names: Wax Vine, Wax Plant, Honey Plant, Indian Rope Plant & Porcelain Flower
Light Needs: High light. Plants that receive less than half a day of sun may not produce flowers.
Best Temperatures: Intermediate to warm and humid conditions and not below 50º F.
Water and Humidity Needs: Never water with cold water. Drench them and let the soil dry out between watering, but water just enough to prevent shriveling in winter.
Growing Guidelines: Grow in a peat-moss-based mix. Wind stems counterclockwise if you want it to vine around a support. Fertilize it once in the spring and do not move the plant when it is flowering. Most plants are three feet long before blooming occurs. Hoyas like the security of a snug pot and plants that are a bit root bound will flower more than those that are swimming around in a giant pot.
Common Problems: Mealybugs
Propagation: Cuttings of previous year’s growth in spring.
Hoya is an Asian native plant introduced by Scottish botanist Robert Brown and named in honor of the 18th-century botanist Thomas Hoy. It is a fragrant, low-maintenance tropical flower.
Flowering plants in the genus Hoya are part of the Asclepiadaceae family, otherwise known as the milkweed family. Newer taxonomy places the genus in the Apocynaceae (dogbane) family.
Hoya flowers grow in a ball-shaped cluster and each cluster may contain up to 40 individual flowers, packed tightly together. The individual flowers appear to be molded from wax or porcelain, thus the common names. Flowers often sport a colored eye in the center of the corona.
The plants produce woody stems with waxy leaves, which remain evergreen. You can train a hoya plant as a vine, or allow it to trail over the side of the container. The full length or height of the plant is normally two to four feet.
When a hoya finishes blooming, leave the flower stalk, as it may produce new flowers. Removing the stalk forces the plant to produce a new stalk, which wastes the plant’s energy and can delay blooming.