Season 4
On November 5, 2007, Showtime ordered 13 new episodes for a fourth season of Weeds. It started on Monday, June 16, 2008 and concluded on Monday, September 15, 2008. The season opener "Mother Thinks the Birds are After Her" was the last episode with "Little Boxes" as the theme song. The opening credits of subsequent episodes, after a recap of previous episodes, begin with a video title card unique to each episode. For the second episode of the season, for example, a highway sign reads "Weeds -- Created by Jenji Kohan" — the embedded text used for all title cards since the show's inception. Each title card also has a prop or part of the setting that refers to a plot element in the episode. Some part of the title card morphs into a marijuana leaf. In the highway sign example, a downward arrow designating a lane becomes a slightly larger pot leaf. Silas and Shane are aged 17 and 13 respectively. However, Silas turns 18 at the end of the season.
Episodes
1 Mother Thinks the Birds Are After Her Jun 16, 2008 
2 Lady's a Charm Jun 23, 2008 
3 The Whole Blah Damn Thing Jun 30, 2008 
4 The Three Coolers Jul 7, 2008 
5 No Man is Pudding Jul 14, 2008 
6 Excellent Treasures Jul 21, 2008 
7 Yes I Can Jul 28, 2008 
8 I Am the Table Aug 4, 2008 
9 Little Boats Aug 11, 2008 
10 The Love Circle Overlap Aug 18, 2008 
11 Head Cheese Aug 25, 2008 
12 Till We Meet Again Sep 8, 2008 
13 If You Work for a Living, Then Why Do You Kill Yourself Working? Sep 15, 2008