I have a huge deck and want to put them out on it in afternoon sun.
Can Christmas Cactus Go Outside in Pots in the Summer?
Certified GKH Gardening Expert
You can put a christmas cactus outdoors, but not in the sun otherwise you run the risk of burning the leaves or the leaves going limp. Keep it in a shady or semi-shady location.
For more information on the care of christmas cactus, please visit the following link: