What is the recommended length of time after castration that Geldings be turned out with mares?

It is generally recommended to wait at least 60 days after castration before turning Geldings out with mares. This allows time for the castration site to heal completely and for the Gelding's hormone levels to stabilize. Turning Geldings out with mares too soon after castration can increase the risk of infection, injury, and unwanted breeding behavior.