Both Madera Verde (Spanish for "green wood") and Greenwood County are fictional locations created by the screenwriter. He chose to name both locations after the street that his parents lived on in East Islip, New York when they first got married.
An early draft of the screenplay featured supporting characters Adrienne Shaw and Brigitte Douglas to be played by Cindy Morgan and Ryan Starr respectively. The script was later rewritten eliminating these characters altogether.
The role of Clair Pruitt was written specifically for Holly Marie Combs. She was offered it, but passed due to her desire to devote more time to her family. Ali Larter was then contacted about the part, but could not accept due to her commitment to the series Heroes (2006).