Age to start jumping a young horse?

[lucy1984]

 

[junglediva]

4 with rider, 3 loose jumping.

 

[helenhorse]

if all is going well, i wil start popping over jumps asap, whether that be 3 or 4...

 

[MerryMAL]

I say 5 or 4 and a half minimum with rider. Never loose jumped so no idea in that respect.