How Old Was Michael Landon on Bonanza
Michael Landon was born on October 31, 1936, which means he was 31 years old when Bonanza premiered on September 12, 1959. He continued playing Little Joe Cartwright until the series ended in 1973, making him 36 at the start of the final season. Public records and network archives confirm these dates consistently across multiple entertainment databases.
The show ran for 14 seasons on NBC, and Landon remained a central cast member for nearly the entire run. His age during filming shifted from early thirties to late thirties, even though the character was written as a young ranch hand. This casting choice was common in 1960s Westerns, where older actors often portrayed teenagers or young adults.
Michael Landon Age and Career Timeline
Before Bonanza, Landon appeared in films and television episodes throughout the mid-1950s, building experience as a character actor. He was already in his late twenties when he auditioned for the role of Little Joe, which became his most famous part. The casting directors selected him partly for his athletic build and youthful appearance.
After Bonanza, Landon transitioned into producing and directing, creating series such as Little House on the Prairie. He continued working in television until his health declined in the early 1990s. His career spanned more than three decades, with Bonanza serving as the foundation of his public recognition.
Bonanza Cast and Production Details
The main cast included Lorne Greene, Dan Blocker, and Pernell Roberts alongside Landon. The series was produced by NBC and filmed at the Paramount Ranch and nearby California locations. Production standards and cast contracts from that era are documented in studio archives and industry reference sources.
Bonanza became one of the highest-rated shows in the United States during the 1960s, regularly competing for top Nielsen rankings. The show was also among the first major American series to be broadcast in color, which required updated production equipment and techniques. Information about the series format, network decisions, and broadcast history is available through official network records and media history references NBC.