I am glad I came across this thread, it is similar to question I just about to ask. A friend of mine just bought a haflinger mare, she is 4yo, preg with her 2nd foal (due in march) and apparently has already been on trail rides is bomb proof blah blah blah. It got me to thinking, I am used to working with QH and paints and that type, so I really don't know much about draft types and warm bloods. IMO, that is a lot for a 4yo horse. The pregnancy and the riding. I have heard that warmbloods and drafts mature at a different rate that say QH. Do they mature slower, and does everyone seem to agree that 3-4 or so is a good time to start under saddle for this type of horse?
Just trying to expand my knowledge.