What age should kids start guitar lessons?

What age should kids start guitar?
Any age you want!
For me, one must-have criterion is potty-trained, controlled continence.
A preference (but not a deal-breaker) is that the child can read well enough to sound out words, allowing them to follow simple instructions on homework pages.
The youngest successful student I've taught started at 4 years old, and I've had around 11 students begin at that age.
One of the wisest ways to determine if your child is truly ready?
Try one month of lessons—then stop. Just one month.
If the child starts asking about lessons on their own, without any prompting from you…
They’re ready.
A month of experience, a break, and self-motivated curiosity--that’s the real test.