Silph Co. is located in Saffron City. In order to enter the building you must have beaten team Rocket at Rocket Game Corner in Celadon City, and the Pokemon Tower in Lavender Town.
Silph Co.
You need to get the Silph Scope from Silph Co.
That TM is in silph co.
Serebii.net has all the answers. Go to Silph Co. and talk to the president of Silph Co.
You get it as a prize from beating your Rival at Silph Co.
there is no silph co in that game
You have to go to Silph Co in Pokemon LeafGreen. You have to go there to get the Silph scope, which you need to advance.
Sabrina is not in silph co she's in the gym.
you defeat Pokemon trainer red and then he comes to silph co
On the 5th floor of silph co.
The silph scope is not in silph co its in the game corner.
Continue with the game and eventually he will fall asleep and will not be in front of the door.