3 Bulbasaur, 2 Ivysaur, and 1 Venusaur:
- Route 16; groves are in in the trees.
3 Charmander, 2 Charmeleon, and 1 Charizard:
- Twist Mountain; numerous areas. XD
3 Squirtle, 2 Wartortle, and 1 Blastoise:
- Route 13; the little islands and rocs in the ocean.
3 Chikorita, 2 Bayleef, and 1 Meganium:
3 Cyndaquil, 2 Quilava, and 1 Typhlosion:
- Route 7; grove is hidden in the treeline in the really tall grass.
3 Totodile, 2 Croconaw, and 1 Feraligatr:
- Route 3; There are three spots that you have to surf to reach.
3 Treecko, 2 Grovyle, and 1 Sceptile:
- Lostlorn Forest; In the area around the bridge and waterfall.
3 Torchic, 2 Combusken, and 1 Blaziken:
- Reversal Mountain; in the cliffside, they'll be training in differing cavernous rooms.
3 Mudkip, 2 Marshtomp, and 1 Swampert:
- Route 8; they disappear in winter, but they live in the treeline near the puddles.
3 Turtwig, 2 Grotle, and 1 Torterra:
- Pinwheel Forest; several spots on top right corner of the forest.
3 Chimchar, 2 Monferno, and 1 Infernape:
- Pinwheel forest; several spots on bottom left corner of the forest.
3 Piplup, 2 Prinplup, and 1 Empoleon:
- Route 21; Grove appears around the big island on Route 21 or on other rocks protruding from the sea.
3 Snivy, 2 Servine, and 1 Serperior:
- Lostlorn Forest; in the clearing somewhere where you find that travel van.
3 Tepig, 2 Pignite, and 1 Emboar:
- Desert Resort Entrance; along the walls and stuff.
3 Oshawott, 2 Dewott, and 1 Samurott:
- Route 6; groves can be found in the treeline around the river.
3 Chespin, 2 Quilladin, and 1 Chesnaught:
- Route 11; there's a small opening in one of the walls that leads up to the tall, steep hills where they reside.
3 Fennekin, 2 Braixen, and 1 Delphox:
- Route 12; in the treeline.
3 Froakie, 2 Frogadier, and 1 Greninja:
- Lostlorn Forest; above the waterfall.
3 Rowlet, 2 Dartrix, and 1 Decidueye:
- Pinwheel Forest; several spots on top left corner of the forest.
3 Litten, 2 Torracat, and 1 Incineroar:
- Route 9; somewhere in the treeline.
3 Popplio, 2 Brionne, and 1 Primarina:
- Route 18; in a special sea cove where you can access by finding the entrance on a wall.