In general, I recommend proactively requeening each hive roughly every 12 months. If you requeened in the fall of the previous year, the fall of the next year is fine. The same goes for spring. Check out our article on...
There can be many signs & reasons to requeen a hive. In general, it’s a good idea to proactively requeen each hive every year before they begin to show signs of needing to be requeened. It’s important to note that what may look like a failing queen is often the result of other factors. Below are the conditions when a hive actually needs to be requeened: