Come early and plan to help. There are plenty of jobs for volunteers. When spring finally arrives, we're ready to be outdoors mowing our grass and working in our yards. And it's better for broodmares to be outside, too. Research shows that broodmares on pasture ovulate sooner than those kept in dry lots.
Horses mate when the days get longer.
Mares normally ovulate for the first time in early April. But not all mares do. Mares 19 years old or older ovulate about 14 days later than younger mares. Turn them out onto pasture. Mares, even older ones, on pasture ovulated sooner than those in dry lots or stalled.