Ferns are one of the oldest types of plants on the planet, and they have evolved into an extremely varied family that is found all over the world. The few things that bind ferns together is that, for the most part, they want moist soil, they thrive in more humid climates, and they don't flower. The same lighting and water requirements don't apply for all ferns, so double check their care instructions and pay attention to how it responds to its environment. If you want a beautiful leafy green plant, and you know you love to water frequently, a fern might be a good choice! Kangaroo paw ferns are characterized by long finger-like shiny green leaves that grow in a low bush that spreads out to the sides.