Pleaselog inorregisterto add a comment.
After you defeat or capture the Sudowoodo on Route 36, A man will say he was entertained by the battle and give you a few berries, on of them being Oran, he will also give you an item that you plant berries in it to make more berries. There is also a man in Violet City by the pokemon center that will give you berries for Shards, I believe that if you give him a Red one, he will give you a Oran Berry among other types of berries.
Because you find apricorns instead of berries, to get berries you will need to find a pokemon with pickup(linoone/phanpy) and your pokemon with the ability pickup will occasionally receive berries and other items if an item is not already being held.
To my knowledge berries are not found in hgss without the ability pickup.
Oran Berries can be obtained in numerous ways!;)