Where to Find and Catch Kartana
From Pokemon Go Wiki
Kartana are found and captured in Nest and Habitat locations.
Nests
Kartana Nests are locations that consistently spawn Kartana.
Habitats
Kartana Habitats are spawn locations where Kartana 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: