HGG Community Forums

The pastures automatically run every night of the 13th, but you can stop breeding from actually happening, if you want, by keeping the studs you would use out of the pasture.

Your mares' pasture bonus didn't affect the pastures running, but it does affect the quality of foals. :)

You can definitely have multiple herds of foals in a pasture at once (I usually do), but always remember to take them out before the 28th or they'll be yummed. I'm not sure whether there will be another auto breeding of the pastures at the end of the month, but you can definitely move your foundations in and manually click the breeding button. :)
Sorry if you already knew a bunch of this, but there are always new people joining and reading along. :P

And yep they often auto breed a second time at the end of the season.