What's the minimum age for crucifixion?

There isn't a specific minimum age for crucifixion that is universally established, as crucifixion was a form of execution used in ancient times by various civilizations, most notably the Romans. The decision to crucify an individual typically depended on their crimes, status, and the circumstances surrounding their case rather than any codified law regarding age. Historically, those who faced crucifixion were often adults, particularly those accused of serious crimes such as rebellion or treason. However, there are accounts of younger individuals being crucified, especially in contexts where they were viewed as threats to authority or engaged in insurrection. If you're asking in the context of historical, legal, or philosophical discussions, each situation would be unique to the local laws, cultures, and specific circumstances of the individuals involved.