Hoya is part of the Succulent family - meaning, it's an angiosperm (flowering plant) that stores water in its leaves. That said, it needs watering when the medium is completely dry.
They do well in hanging baskets both indoors and out, they can be put in a tree or on a trellis. Hoyas like bright indirect light, many can take partial sun...
The plant has gorgeous blooms that are called umbels. This is a bonus to the already beautiful plant. Each plant has its own personality. The older the plant the more magnificent the blooms. Hoya plants have a wide variety of leaf shapes and colors.