Chinese Evergreen Red Emerald, aka Aglaonema Red Emerald or Red Peacock, produces dark green foliage that is splattered with golden-amber speckles and electric-red veins. The Chinese Evergreen family is among the top houseplants that purify the air and is also on Nasa's list of air-purifying plants. They have been found to be excellent at removing benzene and formaldehyde from the air inside your home or office! Not only that, but they are a rather hardy tropical, where they can handle most light and watering conditions.