Forgotten woods

This quest may be started as soon as the player gains access into the Forest Park, by using a key taken from Cassie's safehouse, but unless the Slavers quest is also done, the player would get stuck early on, due to lacking a necessary item (unless they're on a new game plus, and have it in inventory).

The trade
If you talk to the Fairy Queen about the massive plant just outside of her grove, she would agree to share information... in return for some unique food she can't taste otherwise. Unlike standard gifts one requires to give her when summoning, there's no limit of how many attempts can be made.

The queen would reject most items you can offer her, not even considering them (there are special comments if you attempt to give her Bottled Bug Venom, Fertility Pill, Golden Apple, Meat Tendril or Weird Fish). However, she would accept the or  ( and  would work too), as it's indeed a new experience for her and the other fairies. If you don't have any cheese on hand, you can make it at the Milk Farm by putting milk into refinery and waiting for some time; refinery may be obtained in the Mall, after renovating the farm itself.

The fairies would be too busy munching to pay attention to you, but when you leave the Fairy Grove, another fairy would reveal you the one and only weakness of the Giant Plant: there's a very conspicuous and very vulnerable bulb one can... rub, to make the plant leave; however, it would return eventually. It's so blatant, in fact, Lust Doll would wonder how they've missed it before.

Deep forest
The path to the north is locked by another Giant Plant, with its bulb being on the other side. Choose another path for now.

When you go to the west, you would run into a tribal hunter, who would run from you further to the west. Follow him (remember that you can disabled Giant Plants by rubbing the bulbs; do not attempt to attack them directly, it's still just as lethal as before) right until you pass through the mushroom field. When he follows to the east by passing another plant, instead of following him, backtrack and go through the northern entrance, which would force the hunter to move to the east instead. When the hunter would disappear, search for a hidden entrance in the northern part of location.

Once in the village, you have to pass a series of Speech checks to convince the villagers that you're not an enemy (they're suspecting you to be an agent of someone called "plant mama", or suffer a "torture" (by various voodoo dolls) before they decides that you're innocent after all. Regardless of outcome, the villager leader (a large woman who introduces herself as Nymosa) would agree to talk to you, revealing that she's somewhat familiar with your language.

Nymosa can be asked on several topics: her village, her language, the "plant mama", the mushroom and her god, Polkopola. From now on, you can also approach the hunter (whose name is Nymph), albeit there's nothing you can do for now, not even talk.