usually...
Sparse grass
You
In the grass.
grass
You have to see grass and then go in the grass and battle. It is usually Elekid for me but try to get a Pokemon in White Forest. If there is no grass then you can't catch Elekid and other Pokemon so just try to get grass. :)
forest and grass!
gi in the grass
yes
nothing
it has to be summer
Sparse grass
in eterna forest