Is it possible for a skip to happen for the giant plant in the forest? I can't find the thing for the fairies.
It's a deliberately fairly lategame gate. Keep playing and you'll access the item as you go. The item they want is pretty obvious once you actually know the item exists, so having a skip for it seems weird; it's not a difficult or tedious quest at all.
(If you just want the answer (rot13): lbh arrq purrfr. Lbh pna trg gur purrfr znxre va gur fubccvat gbjre va Hccre Arj Nex, nsgre pbzcyrgvat gur erabingvbaf va gur Zvyx Snez. Gb ernpu Hccre Arj Nex, tvir sbbq gb gur thl va gur fyhzf.)