Rock ferns are a type of fern that typically grow in rocky or mountainous areas. They thrive in well-drained soil and often prefer shaded environments, making them ideal for crevices and cliffs. These ferns have unique adaptations that allow them to survive in harsh conditions, such as drought and limited nutrients. There are many species of rock ferns, including those in the Polypodium and Asplenium genera. They are known for their attractive, feathery leaves, which can vary in shape and size. Rock ferns play an important role in their ecosystems by helping to prevent soil erosion and providing habitat for small wildlife.