Perennial epiphytic or climbing cactus native to Central America. Night-blooming and exotically scented, the flowers of Dragon Fruit can reach more than a foot long and wide.  It is also known as the Night-Blooming Cereus. The fruits are red and free of spines, with a succulent white flesh dotted with the jet black seeds, the flesh being very sweet, edible and delicious, reaching up to 5 inches long.  Cacti may be planted in the ground and trained up a pole and then allowed to droop into a weeping willow shape.  The cacti have a jointed growing habit, best trained to a trellis, wall or tree once the plants attain sufficient size. The fruit is popular as a fresh fruit, eaten out of hand. It is also used to flavor drinks and pastries.  Unopened flowerbuds are cooked and eaten as vegetables.
Growing Instructions
Prepare a mixture of half potting soil and half sand, perlite or vermiculite. Water the mixture so that it is moist but not wet.
Put the seeds on the soil.  
Water the seeds. The seeds need light, moist soil and warm temperatures to sprout.Germination is in 2 to 4 weeks at 70 degrees F (21 degrees C).
Place the pots in an area with warm temperatures in full sun or part shade.  
When the seedlings are a few inches tall, they can be transplanted.