Boston Fern and PotBoston Fern Nephrolepis Exaltata There might be over 200 types of fern, but that doesn't make the Boston Fern any less special. It is native to tropical areas of South America, and they are great at purifying the air in your home. This is a gorgeous plant with plenty of lush green, feather like fronds. The Boston Fern is said to be a symbol of sincerity, and according to old folk tales they're a sign of fairies living nearby. Show me the humidity!