This project collects observations of Geranium hybrids found in California.

Exceptions:

• G. cantabrigiense has its own project:
  https://www.inaturalist.org/projects/geranium-x-cantabrigiense-cambridge-crane-s-bill

• G. sanguineum has its own project:
  https://www.inaturalist.org/projects/geranium-sanguineum

The following website lists many Geranium hybrids and cultivars:
https://www.diggingdog.com/plant/P-1336 less ↑