Thanks for all of your replies! I haven't watered it since my last post, but I think you might be right,
@Daisyl; looks like kids are definitely off the cards! Poor fella.
Here's a current pic:
Baja_Costero said:Definitely rotate the plant in the meantime if it appears to be leaning toward the light.
I can certainly do this, although the plant had a natural lean when I bought it (see the first pic in the thread).
DaisyI said:It may be too chilly. I just looked at the website where you purchased your plant. Four things stand out: keep it warm, water sparingly, keep it in bright light, use cactus appropriate soil.
Cold could definitely be an issue because it's perched next to the window, and autumn/fall is just starting. Likewise, I haven't repotted it since it arrived, so it's currently not in any cactus soil that I'm aware of, either — just the soil it arrived in.
DaisyI said:Have you looked at the white spots with a magnifying glass?
I haven't, but will give this a go and see if anything sticks out. From what I've read, the white spots are just sap; nothing to be concerned about, apparently.