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.
Wax plant, wax flower, Indian rope plant, porcelain flower, honey plant
Grow as a hardy perennial in zones 10-12, elsewhere grow as a tropical container plant.
Full to partial sun. Plants that receive less than a half day of sun may not produce flowers.
Hoyas bloom throughout the summer months
Hoya flowers grow in a ball-shaped cluster, similar to mophead hydrangeas. Each cluster may contain up to 40 individual flowers, packed tightly together. The individual flowers are “perfect looking” and bear scrutiny: they 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.
- H. Archboldiana: Cup shaped creamy flowers with a maroon corona
- H. Carnosa: Most common in the trade, an easy hoya for beginners; pale pink flowers with a magenta corona
- H. Compacta ‘Indian Rope’: Pale pink flowers, curly leaves offer interest when plant isn’t blooming
- H. Cumingiata: Yellow flowers with red corona; very fragrant
- H. Kerrii Variegata: Heart-shaped foliage with white margins; yellow and orange flowers
- H. Onychoides: Purple flowers have an exaggerated star shape