I live surrounded by cacti in the Sonoran Desert in Tucson, Arizona, not only do I grow cacti in my garden, but in my home also.
I’ve spoken with different growers and nurseries that sell cacti here in Tucson, and the consensus is if you have enough light, any small cacti you choose should do well.
Putting it plainly, cacti are slow growers. So, don’t be surprised if you don’t see much (if any) growth action in a year.
These aren’t low-light plants. At least 6 hours of high light per day is their sweet spot. In general, cacti need more light than those fleshy succulent plants we all love.
Here’s a rule of thumb when watering cacti indoors: let them completely dry out, and then water again. It’s best if the pot has at least one drainage hole.
The soil mix needs to be light, have lots of chunks for aeration, and to have the water drain right out. Regular potting soil is too heavy and can hold too much water.