When did Hitler kill his mother?

Hitler did not kill his parents. Hhis dad died when he was 13 and his mom died of cancer when he was 18.

His father Alois Hitler, died on January 3, 1903 from a pleural hemorrhage at the age of 65 years old.

His mother Klara Hitler (nee: Polzl) died on December 21, 1907 while being treated for Breast Cancer.