An important initial step to breeding Pantherophis guttatus (previously classified as Elaphe guttata) is always to figure out how to properly sex your corn snakes. Check always right after acquiring them to avoid increasing a pair that is same-sex years before choosing the error. Probing for hemipenes may be the favored technique, and popping (manually everting the hemipenes) works well on juvenile specimens.
Many herpetoculturists practice a routine of environmentally conditioning their breeder-sized corn snakes (typically people with acquired a length that is total of three legs). I think, photoperiod and temperature are both essential triggers of reproduction in corns. Allow corns experience a cooler period that coincides naturally utilizing the smaller time lengths of wintertime.