Pineco evolves to Foretress at level 31. You can leave it at the Pokemon center or try to level it up as best as you can.
( for soulsilver) it is the same level but you can trade it with Steven ( at Silph Co. at saffron city, Kanto) for a Beldum. Note: this has to be after you have defeated/caught groudon. You also need to have received your kanto and hoenn starters. Steven is at Silph Co. on Monday afternoons.
Pineco will be able to evolve at Level 31.
pineco --lvl.31--> forretress
Pineco evolves into Forretress at Level 31.
pineco evolves at lv.28
you evolve pineco
L.v 31
To get Forretress you need to evolve a Pineco. To get a Pineco you need a Pokemon that knows Headbutt. Use Headbutt on a tree and a Pokemon will fall out. This can be a Pineco. Ilex Forest is an example where you can come upon Pineco by headbutting treees.
Evolve a Pineco at level 31. Pineco can be found by Headbutting certain trees.
level 31
Lvl 31
he evolves at lev.31
You need to get a Pineco to evolve into it at level 31. You can get a Pineco after reciving the National Pokedex at the end of the game and inserting an Emerald cartridge into your DS. They will become available at Routes 203, 204, 210, 229 and Eterna Forest.