Cereus peruvianus - juvenile form|
Likes full sun. I water this during it's growing season, with just the occasional splash in winter.
This is one of the easier plants to own. I've very seldom had one croak due to excess water, but then I'm careful to give it well-drained soil and try not to smother it with love.
Extreme neglect will cause it to shrivel and just generally look bad, but it can be revived by keeping the soil slightly moist in the spring and summer.
Taking one or two inch cuttings that include a side branch can give you and old West style saguaro look...for a few months...then it starts to grow like a madman again. You can take as many cuttings as you like from a plant this size, and it will fill back out and hide the cuts fairly quickly.
I'm one of those people who can't bring themselves to throw away a plant, or even a potential plant, so I have roughly 50,000 of these, all from a single 3 inch tall plant.
I've never seen it flower and don't expect to. It has only tried to throw out an adult form stem once. It was starting to be a big blue stem...but I can't for the life of me remember what happened to it.