Rolling Fields is the first zone you'll encounter in the Wild Area and as such, it's fairly open. You'll find an Ingredient Seller, many Strong Pokémon starting with Onix near the entrance and there are nine Pokémon dens that you can battle against Dynamax Pokémon. Additionally, you'll be near the Meetup Spot where you can get healed for free and access the shop to stock up on items should you need to. It's a good idea to spend a little time here when you first reach the Wild Area to get familiar with it but the best time to fully explore the area is after earning the Water Badge, that way you'll be able to capture a lot of the Strong Pokémon in the area.
You'll find the Ingredient Seller by heading north along the dirt path from the entrance and then standing near the tree to the east as you approach the lake. There is no set items that he sells, instead he will sell all the Ingredients available but change his selection of six every day.
|Honey||Hidden Item - Flowers to the west of the entrance, near where Onix spawns (Respawns once a day)|
|Poké Ball||Hidden Item - Flowers to the west of the entrance, near where Onix spawns (Respawns once a day)|
|Energy Root||Hidden Item - Along the cliff to the west of the entrance (Respawns once a day)|
|TM84 Tail Slap||Southwestern corner of the area, along the cliff inside a log|
|Big Mushroom||Hidden Item - West of the area by a tree (Respawns once a day)|
|Tiny Mushroom||Hidden Item - West of the area on a pair of trees (Respawns once a day)|
|Tiny Mushroom||Hidden Item - Tree northwest of the Ingredient Seller (Respawns once a day)|
|Tiny Mushroom||Hidden Item - Tree to the east of the area, in the middle (Respawns once a day)|
Pokémon Breeder Chloe
You'll find Chloe off to the eastern edge and she'll offer to battle you, you should be able to defeat her when you first meet her.