Dragon fruit grows on the Hylocereus cactus, also known as the Honolulu queen, whose flowers only open at night. The plant is native to southern Mexico and Central America. Today, it is grown all over the world.
It goes by many names, including pitaya, pitahaya, and strawberry pear. The two most common types have bright red skin with green scales that resemble a dragon — hence the name.
The most widely available variety has white pulp with black seeds, though a less common type with red pulp and black seeds exists as well. It is a nutritious fruit containing several types of antioxidants and its taste is like a combination of a kiwi and a pear.