For starters I have no idea what kind of cactus this is so if anyone can help identify it that'd be awesome. I got it as a tiny little thing from an airport a few years ago and it's done pretty well over the years, up until now.
Recently I noticed it was yellowing at the bottom so I just pulled it up to get a good look at the roots. The soil was dry and loose on top, slightly moist and compacted on the bottom.
I can't tell if this is rot or not.. the discolored portion feels just as firm as the rest of the cactus. No soft spots that I can tell.
I'm not sure if I should just add some rocks to the soil for better drainage and simply repot it, or if I should perform surgery and cut this guy in half. If I cut it..would I cut about at the chopstick level? (See photo)
Never done that before so no idea how it works. Or where roots regrow from. (I know roots grow from nodes on my other houseplants, but no idea with the cactus.)
Any suggestions/advice welcome!! Thank you!
