I bought a ~12 inch cutting of Physical Graffiti online just over 2 years ago. The first year I was uncertain how much sun I should give it, so I gave it too little and it didn't grow very much. Last year I just put it out in the garden until winter and it exploded with growth. Now I finally have my first flower.
This picture is a couple days old. The flower has now grown a few inches past the ring above it in the image. Just gotta hope it pollinates and maybe I'll get to taste my first ever dragon fruit.