Jangerberries are a berry used mainly as a secondary ingredient in Herblore. If eaten, they temporarily boost Attack by two and Strength by one, restore one Prayer point, and reduce Defence by one.
According to the book Gielinor's flora - flowers, jangerberries are berries native to Feldip Hills and taste sour and bitter when eaten.
- Jangerberries are used in Herblore to mix Zamorak brews.
- 5 Jangerberries can be used as payment for snape grass patches.
- Jangerberries can be used on a compost bin to make supercompost.
Jangerberries can be grown using Jangerberry seeds with the Farming skill at level 48 Farming. A player can pay the farmer six watermelons to look after the bush. Players will receive 50 experience for planting and 285 experience for checking the bush's health. Players will then get 19 experience for harvesting each Jangerberry; one seed can produce a minimum of 4 berries, with a higher Farming level reducing the chance of using up one of the four "lives" of the patch, much like harvesting herb patches. As with all bushes, the berries will grow back over time.
For an exhaustive list of all known sources for this item, see here