Yes, ferns do have the ability to regrow if you cut them. This is due to their robust nature and unique growth pattern. Ferns grow from a central point known as the rhizome, which stores energy and nutrients for the plant. If you trim or cut the fronds (the leafy part of the fern), the plant will use its stored energy to produce new growth. It's important to note that the best time to trim ferns is in the spring, just before the new growth starts. This allows the plant to focus its energy on producing fresh, healthy fronds. However, excessive or improper cutting can harm the fern, so it's always recommended to cut with care and not to remove more than one-third of the plant at a time.