I'm getting a little frustrated with all my house plants. I have a wide variety and they all have the same problem. They are nice healthy plants with new growth but they have brown spots on the leaves or tips of the leaves. I think this is because of the dry winters we have here in canada but I'm not sure what I can do about it. I try misting the plants once in awhile. What else can I do or is there a different problem? Are there other plants like the African Voilet that should not get there leaves wet at all?