Newcomer debutant Krishna, Ananya (of Nadodigal fame), Suhasini Meera Krishnan and Vivek play main roles in Seedan. Sheela, Ponvannan and Ilavarasu are also part of the cast.
Dhanush plays an extended cameo in the film. He plays the cook who is instrumental in bringing the young lovers together.
Dhanush read up a lot on cooking and observed chefs to get their body language right. Dhanush, as part of his character, even cooked some amazing food while shooting for the film.
Seedan is the second Tamil film produced by R Mohan under Myth Productions. Srinivas Devamsam is the cinematographer, and Ram Sudarsan is the editor of the film. The music is by Dheena and the songs by Pa. Vijay and Yugabharathi.