Here's a breakdown:
* Ideally, horses should be at least 4 years old before they start jumping. This is because their bones and muscles are still developing.
* However, young horses (3 years old) can be introduced to jumping with very low fences and minimal effort. This should be done with careful supervision and a qualified trainer. The goal is to familiarize them with the concept of jumping, not to push them too hard.
* A horse's maturity also plays a crucial role. Some horses are naturally athletic and mature faster than others.
* It's more important to focus on the horse's physical and mental readiness than their age. A well-trained 4-year-old could be more prepared than a 5-year-old who hasn't been properly trained.
Important factors to consider before starting show jumping:
* Physical development: The horse should have strong legs, a sturdy back, and good balance.
* Mental readiness: The horse should be confident, willing to jump, and able to focus.
* Training: The horse should have a good foundation in basic training, including obedience, control, and jumping technique.
Always consult with a qualified veterinarian and experienced trainer to determine the best age and readiness for your horse to start show jumping.