Planting Bare Root Ferns? Soak in water 1 hr prior (what temp?) – Potting soil add Bio Tone Starter or ? to potting soil outside of the potting soil that is in contact with the initial bare roots?
You could moisten the roots with some lukewarm water but don’t leave them submerged for more than 5-10 minutes. Use the Bio-tone very sparingly since ferns don’t like too much food. Bio-tone is a gentle organic so there will be no harm if a bit of it comes in contact with the roots.