The fifth season of Weeds premieres tomorrow night.

In a new interview with TV Guide, star Mary-Louise Parker spoke on the evolution (or de-evolution, really) of her character, along with upcoming storylines on the Showtime hit. Enjoy these excerpts from the article:

On Nancy hitting rock bottom: She goes way down. We're shooting [Episode] 9 now — she's going down. But I like that.

On her character during season five: I feel like she has a little bit more conscience and a little more direction. I mean, I wouldn't go crazy. She's not, like, totally living for somebody else, but I think there's a little bit of a shift there.

On guest star Jennifer Jason Leigh: She's just great. She's also a wildly cool person. We're both younger sisters, so we understand the dynamic between sisters, and how wack and rich and wonderful it is.

On her future on the show: I would stay on this train until it goes off the tracks.

To get excited for the new season, relive some of your favorite Weeds quotes now!

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.