Wall fern is a type of fern that grows on walls or other vertical surfaces. It is a popular ornamental plant that adds a natural touch to any indoor or outdoor space. In addition to its common name, there are several synonyms for wall fern, including rock fern, cliff fern, crevice fern, and wall vase fern. These names reflect the plant's ability to thrive in rocky crevices and other challenging environments. Wall ferns are low-maintenance plants that require minimal care. They are also versatile, as they can be grown in a variety of containers or mounted directly on walls or other vertical surfaces.