It is not possible to construct any buildings or decor in this area.
Everfree Forest has notably different zone expansion model than other areas. You are only allowed to expand along certain paths and each expansion zone has its own expansion cost independed on the amount of expansions you bought earlier. Note that the wooden bridge near the Tree of Harmony and Tree Sap ingredient can't "be crossed", you must follow the other path leading from the Zecora's Hut to get to the other side. Some paths are blocked by obstacles for which you will get quests that will require you to clear them before you can advance past them.
Ingredients for Zecora's Hut can be found here. Up to five of each ingredient can be collected.
|Ingredient||Recharge time||Gems to skip|