Where here are all the hidden groves in Pokemon white 2?

In Pokémon White 2, hidden groves can be found in several locations:

1. Route 15 - Near the entrance to the route.
2. Route 16 - Accessible through the area with the grassy patches.
3. Route 17 - Near the entrance from Route 16.
4. Route 18 - On the eastern part of the route.

These groves are typically indicated by shaking grass or special terrains where Pokémon can be encountered.