You can get to the Viridian Forest in HeartGold by going through Diglett's Cave, an entrance to Diglett's Cave is in Vermilion City.
in viridian forest in the morning he is very rare to find
In the Kanto region above Viridian City
viridian forest.
you find it at viridian forest
In kanto, south of pewter city, north of viridian city.
Viridian forest, Power plant.
you can find pikachu in viridian forest
You can get one in Viridian Forest.
Capture a seedot in viridian forest then evolv it
There is no Viridian Forest in D/P. Viridian forest is a location in the Kanto games only.
you can find a leaf stone in viridian forest in kanto in heartgold
Pikachu can be found in Viridian Forest in Kanto.