The dragon fruit cactus came from the tropical jungles
of Central America. This plant can do well in partial shade.
The photos below show commercial growing in full sun.
The climate in Vietnam and Thailand is ideal for this plant.

Blue Dragon Garden in Vietnam (photo by Vo Van Thanh)
VUON THANH LONG Blue dragon garden in Phan Thiet

Rerngjit Liew posted this picture in WEBSHOT.
Chokchai Farm at Pakchong, Korat province in Thailand.

The vines with fruits hanging from a fence in San Diego.

San Diego Bien Hoa Farm grows dragon fruit in greenhouses.

Tall dragon fruit plant at house entrance, Old Town, San Diego.

The pitahaya (pitaya) plant is taller than rooftop using a tree for support.
This plant with red flower grows in Oaxtepec about 2 hours from Mexico City.
Mexico City is too cold (higher altitude) for the pitaya plant to grow.
Photo and story by Diego Valle Jones.

Dragon Fruit plant in Vietnam, Jack Goh on right in the photo

Grow Dragon Fruit plants in pots

All about dragon fruit

United Nations Food and Agriculture

Dragon Fruit in Asia and Tropical America

Awesome fruits

A book about good health and organic gardening

If you are interested in growing this plant, please read
this book for more information.