Though Stanleyville is described as a town in the Midwest, the movie was filmed in parts of Georgia, including Monroe and Rex, which is reflected in several of the streets named for Confederate generals.
In an interview, CJ Adams said that he was 10 at the time of filming, "just before my [11th] birthday [in 2011]". In the same interview, he said that the movie poster of the title character's legs with leaves growing from them were not his but a body double's.
In the soccer championship, when Jim and Cindy are urging Timothy to move his feet, the same background actor is seen simultaneously behind the couple and behind Timothy. Later, when the game is over, the same background actor is seen behind Jim and Cindy and then celebrating on the other side of the field at the goal.