I would like to bring a sword fern indoor to my bathroom. The light and humidity should all be good, but I am wondering if this plant will thrive or not without being outdoors? I'm not sure if they need a cold spell or not. My initial try (dug up and potted a fairly good sized fern in late spring) resulted in the fern almost immediately dying, even though I was watering it quite often. I have since put it back outside and it is showing signs of rejuvenation, so I will cut it back hard and replant that particular fern back in native soil. I also have deer fern I could experiment with. My objective is to create a native look in the bathroom - ferns, piggyback plant, kinnikinnik, salal. I live in the Pacific Northwest and all these plants are available to me from my back woods (no poaching involved). I know that piggyback is sold as a houseplant, just not sure what other natives would tolerate indoor living.
