Blueberry/ko

Blueberries (known as oval-leaved blueberries in the survival guide) are a food, hydration, and material item. Blueberries, along with blackberries are the only collectible non-poisonous types of berries. They were added in update v0.01 and made collectable in update v0.12 in The Forest.

Gameplay
Blueberries can be collected from blueberry bushes, which can be found all through the peninsula. They are one of the most useful food items as they provide hydration, fullness, and energy. They only provide 1 calorie each. They do not spoil, making them useful for exploring deep into the caves.

After collecting or eating blueberries, the player has a chance of receiving blueberry seeds, which can be planted in a garden. Blueberries cannot be planted in the wall planter as the bushes are too large to fit. The hydration effect from blackberries and blueberries is halved in hard survival mode.

With a pouch, you can collect blueberries from blueberry bushes, but you can only carry 30 blueberries at a time.

Building
Blueberries can be grown in gardens, though not in caves: