Hoya, also known as wax plant or porcelain flower, is a genus of tropical climbing vines in the Apocynaceae family, native to Southeast Asia, Australia, and the Pacific Islands. Hoya plants are popular houseplants due to their attractive foliage and fragrant, waxy flowers that bloom in clusters.

The leaves of hoya plants are fleshy and waxy, often with interesting patterns, and the flowers are typically star-shaped and come in a range of colors, including pink, white, and red. Many species of hoya have a sweet fragrance that is especially strong in the evening, and they are often used in perfumes and other fragrances.

Hoya plants are relatively easy to care for and grow well in bright, indirect light and well-draining soil. They are also tolerant of dry conditions and can go for extended periods without water. However, they are sensitive to cold temperatures and should be kept in a warm, humid environment.

Hoya plants are often propagated by stem cuttings, which root easily in water or soil. They are also popular among collectors, with many rare and unusual species available for cultivation.