Hylocereus undatus

If it's happy and shows it, you better tie her securely to something

I clipped the top at a joint. Planted in rich soil a number of fingers are sprouting.  I'm guessing gravity will pull them -- hopefully to flower and fruit.

10/4/2014- gravity and a gentle nudge sent these stalks hanging low. It seems that once this one gets going she gets going. A little research suggests that pollination (by hand?) is necessary for the fruit to set.