To add green to your indoor; ferns are the most gorgeous option. Those lush green bush of ferns will make you happy for sure. These tropical plants love both humid and warm weather. So, if you are looking for plants for the bathroom; then ferns should be the ideal choice. They like to stay moist all through the day. Make sure the soil is moist always by watering regularly. Ferns love indirect sunlight that comes through the window. A few verities like Boston Ferns are very good air purifier plants as well. You can also hang them from the basket to get a beautiful look. However, you should not place ferns in direct sunlight as it is harmful to them.