Also known as Pitaya. I grow one that I bought at Disney in 2012 at The Land Pavilion in one of those little Mickey’s mini gardens. (Do they still sell those?) I don’t much care for it. Like all jungle cactuses, it’s large and unruly. It’s prickly and difficult to handle and it’s never flowered or fruited for me, probably because I neglect it and don’t give it enough water, fertilizer, or space to grow. It used to be quite large, about three feet in diameter, but after we moved I decided I didn’t want to deal with its size (and spines) anymore so I hacked it back to a small 4” pot’s worth. Now it just sits on the windowsill being an ugly houseplant. I’ve got a handful of other jungle cactuses that I do like, so I keep thinking “Maybe this will be the year I start treating the dragon fruit better…” But, meh, maybe next year.
I don’t eat the fruit often. The ones in the grocery store are usually underripe and flavorless so I usually only have them while traveling somewhere where they are grown locally and actually have flavor. Even then, it’s still just a mild sweetness and nothing to write home about.