You can only find Menectric in the Safari Zone.
Safari Zone Plains- place 15 Plains items
Safari Zone Rocky Beach- 10 Forest items
Safari Zone Wasteland- 3 Plains items
Level 26
you cant find celebi in soulsilver
Hey I have growlithe in soulsilver get in GTS
yOU FIND IT ON WHIRL ISLANDS.
EVENT!
you can't
you cant find him
in the sinnoh region in Soulsilver.
saffari zone
in viridian city
Mahogany Gym
in the wild