I suppose this is a dumb question.... but.... do you always need to let a houseplant's soil dry out before watering it to prevent root rot? I know with succulents you are supposed to let the soil dry out completely between waterings, but I had kinda thought with most other plants (depending on what plant it is, of course) the soil should stay moist (but never soaking unless you have a wetland plant) a couple inches below the surface! Is that right?? I'm a little confused!

