Some ferns are easier than others. Had a sword fern, and practically ripped it out by the roots, and relocated to a spot along the front of our house, and its been doing fine for three years. Been trying to naturalize licorice fern, because it is native but endangered, and I just can't get them to last in my woodsy shade area, filled with lots of tree debris that forms layers of natural compost. Next time, I'll try keeping them in the pot longer, because I think it was probably potted up right before it was sold to me, leading to a double root shock.