Showtime announced on Thursday that it has greenlit the comedy for 13 new episodes, due to go into production in 2012.
Weeds centres on Nancy Botwin (Mary Louise Parker), a widow and single mother who over the course of seven seasons has become a marijuana queenpin.
Justin Kirk, Hunter Parrish, Kevin Nealon and Alexander Gould also star.
The show was first rumoured to be returning for another season late last month, going against executive producer Roberto Benabib's claim that season seven could be Weeds' last.
Weeds' season seven finale aired on September 26.
Watch a clip from the Weeds season seven finale below: