Pitaya Pitahaya -Prepare the soil bed. Dragon fruit needs full sun, so choose a sunny area in your garden or a sunny windowsill that gets at least six hours of sunlight a day. For the soil, choose potting soil that is well-draining (dragon fruits are sensitive to “wet feet,” or consistently wet roots) and rich in organic matter. Don’t use cactus soil—as tropical plants, dragon fruits like more water than other cacti and want something that retains moisture slightly better. Plant the seeds. Sprinkle the dragon fruit seeds across the soil surface and cover with a thin layer of soil. It’s okay if it barely covers the seeds—they don’t need to be planted deep. Water. Hylocereus Undatus Cactus Purple Dragon Fruit Pitaya/Pitahaya/Strawberry Pear. After the seeds have been soaked, they should be planted in the prepared soil. Plant the seeds about one inch deep and cover them with a thin layer of soil. Water the soil lightly and keep it moist until the seeds germinate.