Hoyas are native to Asia and Africa, and there are over 300 species of Hoya discovered worldwide with completely different flower sizes, shapes, and colors. Because of their thick waxy foliage, they are often referred to as wax crops. Hoyas are long-lived, have a traditional, deep green, vining foliage, and produce fragrant, mild pink, and pink star-shaped flowers. These crops love medium to shiny indirect mild but can even tolerate low gentle.