The yellow dragon fruit tree (Selenicereus megalanthus) is a vigorous climbing cactus known for its incredibly sweet, white-fleshed fruit with tiny black seeds, thriving in full sun, well-drained soil, and warm climates (Zones 10-11), requiring support like a trellis and benefiting from hand-pollination, offering an exotic, low-maintenance tropical addition with fragrant nocturnal flowers and easy-to-remove spines on its ripe fruit.