Pokémon Gold/Silver introduced the idea of berries. Berries are items that can be held by Pokémon and used in battles automatically for various effects. The locations of the berry trees and their effects are listed below. Each berry tree can be picked daily.
Description: Restores 10 HP
Location: Route 11, 29, 30, 38, 46. National Park (Prize), Wild, Trade, Gift.
Description: Cures confused Pokemon
Location: Route 1, 31, 43. Blackthorn City, Gift.
Description: Cures frozen Pokemon
Location: Route 44. Fuchsia City, Pewter City, Wild, Gift.
Description: Restores 30 HP
Location: National Park (Prize), Trade, Gift.
Description: Cures burned Pokemon
Location: Route 26, 36. Pewter City, Trade, Gift.
Description: Wakes up sleeping Pokemon
Location: Route 39. Pewter City, Gift.
Description: Cures all conditions
Description: Restores PP
Location: Route 35, 45. Trade.
Description: Cures paralyzed Pokemon
Location: Route 8, 46. Violet City, Gift.
Description: Cures poisoned Pokemon
Location: Route 2, 30, 33. Gift.