Question: Do ingredients on shelves near alchemy labs respawn? These are located in alchemy rooms in houses you can buy and also the one in the hall of countenance at the college. I know the stuff that you steal form shops doesn't respawn, but I was wondering about houses and the college. does anyone know?

nope.

Are you sure? I just read on uesp that everything in the arch-mages quarters respawns after 30 days. Maybe it takes 30 days in these other places too. But that seems like a long-ass-time.

They do respawn after a certain time, 30 days I think, but you have to stay out of the cell completely for that long.

oh, I was talking about the houses. sorry for confusion.

Even if it is 30 days for houses, it seems ridiculous that you have to stay out of your own house for 30 days. Oblivion's re-spawn times were much more fun.