8. Dracena
The Dracena species is one of the most seedling houseplants you can find in any garden center. Dracena marginata, in particular, looks like a beautiful palm tree with long, thin serrated leaves growing from a smooth, gray bark. The Dracena species is an excellent air purifier that excels at removing carbon dioxide, formaldehyde, benzene, and trichloroethylene. Dracena is also excellent at naturally increasing humidity in the room.