I'm surprised we haven't had an actual farm yet. The closest thing we had was that Miltank farm, that Skiddo Farm Flocessy Ranch, but what about the other animals and the crops? All three literally had only one farm animal-like Pokemon, and NONE had any Spoinks, Grumpigs, or Tepigs...
Anyway, the farm would have all sorts of farm Pokemon, like Miltank, Torchic, Tepig, Spoink/Grumpig, Mareep, Skiddo, Ponyta, etc. Of course, if it was in a Reborn kind of game, Torchic would probably just be a NPC and not an encounter... Also, there should be some crops or something, although the only ones we have are Apricorns and Berries, which don't really seem like farm crops, but oh well.