Hylocereus sp (possibly Hylocereus undatus)

 by Francescp Zezza

Also known as Nightblooming Cactus (because of its actual flowering habits). It looks like having its origin somewhere in the Caribbean basins. Enjoys sun (full to moderate), good watering and fears the frost. Will reach a full size of 5 meters (16 feet). Here in Italy, it can be kept outside ONLY in the extreme south (NOT in Rome, then). Usually blooms in the end of summer (late August, most likely September) and easily propagates by cuttings. It is really a pity those flowers will last only one night.

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