Best plants for an office without a window? I have three plants in my office, but none have done overly well. A peace lily did well for a while (many months), then started drooping. I took it home and put it outside and it got better in a week. I've left it on the porch at home, so I'm one plant down. I bought a weird little mix from a store which did well for months and is now dying and drooping. I bought another plant from Costco which is a decent size (forgetting the name, sorry) and numerous stalks turned yellow, which I cut off. Other stalks have started to wilt. Are there any plants that can survive in an office environment for a long time or will I need to buy new ones every six months (or even more quickly)?