This trick requires almost a year of patience, depending on where you are in the game. Wait until you have the Talking, Hybridizing plant Tartan. Once you have him, find the seed you want to be "super". It can be a hybrid or normal crop). Then, gather the vast quantities of the following flowers in the corresponding seasons: Happy Lamp (Summer), Gemsoil (Fall), and Upseed (Winter). Once you have all of them, go to Tartan with the "super" seed to be. One at a time, combine the seed with one of each flower. Once each flower is combined, stop hybridizing and press Start
. Highlight the seed and press the "Help" button. The seed is now level S, can be grown in any soil, in any season, and thus a "super" seed.