You’re going to want to pay your respect to Ferns – they’re one of the oldest plants in the world. 300 million years, to be exact. Possibly to your surprise, Ferns are not just tropical-loving plants. There are 12,000 species of Ferns out there growing in all sorts of climates that range from 2 inches tall to 30 feet high – nearly the height of a 3-story home! Ferns are very popular houseplants since they’re relatively easy to grow and their delicate-looking, lace-like foliage – known as fronds – are as inviting as those metal arms of a scalp massager you want to your head up against. While there are a lot of Fern varietals out there, they do all share one thing in common: humidity. Humidity is essential to the wellbeing of your Fern – if you have a particularly dry home then you may want to just look at the Fern and not take one home.