Forest Green continued their move up the Blue Square Bet Premier table by seeing off Tamworth to go ninth.
Rovers led through Jake Thomson's dipping free-kick but Nabil Shariff levelled the scores from 12 yards out.
The hosts led at the break courtesy of Chris Stokes' drilled effort into the bottom corner.
Victory was secure when Patrick Kanyuka fouled Matty Taylor in the box and Yan Klukowski fired his penalty past put Jonathan Hedge.
The Gloucestershire side, who have won six out of their last eight league games, are now just three points off the play-off places.