Join Date: Apr 2012
Location: Dallas, TX, USA
• Horses: 0
Do not wait until 18 mos unless you keep your fillies and colts separated
While I usually do agree with Cherry, I want to warn people who have quarter horses that I have had precocious colts that would breed at 7 months - so unless you keep your colts and fillies separated I would advise either gelding them young (when it is easier on them anyway) or keeping them well separated - and not over a common fence line.
How early a colt will be a problem depends on the breed and the individual colt. I've had them mount as young as 7 mos. And have had Thoroughbred colts that didn't know what to do at age 3 when mares were backing over them.