Christmas cactus living in a 10 story apt it is not possible to carry all my plants outside. How am I going to get them to bloom?

Question

or give up my passion for them. Not one of my Christmas cactuses bloomed this winter. If I have one not looking well I take a few pieces of it and put in a rooting powder and try to stick in an existing plant or start a new one.
I believe living where I am on a 10th floor may make them impossible to bloom.
I currently have 7 plants and one I have to repot. They can get plenty of indirect light if I put the blinds a certain way as I face the east.
I need some help please. Also my cat has started to eat my spider plants.

HELP

Answer 1

They don't have to be outside to bloom, but the cool air does trigger bud formation in the fall. You can also trigger buds by leaving them in a room that stays completely dark overnight (12 hours) beginning in fall. Also allow your plants to become potbound, as they prefer those conditions. Here is more:

https://www.gardeningknowhow.com/ornamental/cacti-succulents/christmas-cactus/how-to-make-a-christmas-cactus-bloom.htm

https://www.gardeningknowhow.com/houseplants/spider-plant/spider-plants-cats.htm