Where to Find and Catch Servine
From Pokemon Go Wiki
Servine are found and captured in Nest and Habitat locations.
Nests
Servine Nests are locations that consistently spawn Servine.
Habitats
Servine Habitats are spawn locations where Servine is likely to be encountered, but not guaranteed the way a Nest is.
Additional Tips and Information
Best Nests
If you know a really good nest or any of the nests above is really good, list them here: