Blanketing is bad for horses as you can read in the related link, however, if you rob them of their protection from the cold just because you want to spend less time cooling down or because you think it looks better, then your horse has no protection from the cold and you will have to blanket them in the winter, or any time it drops to extreme temperatures. To tell if your horse needs a blanket, touch his ears. if they are cold, he is cold. If not, leave him unblanketed because he is fine.
autumn
Winter
The answer is pretty simple... WINTER!Winter
it depends on the weather,season, and the kind of blanket
It would need it when it is cold, wet, rainy, or all of the above. Usually winter, spring, and late fall.
Winter I should imagine.
every other season apart from summer unless it is particularly warm
Winter, I would think! Winter, and fall, when cold. Basically, any time when its cold out, kk?
When they are sweaty and in the Autumn and winter
winter and fall but mostly winter
Usually you'd get your horse a new blanket in late fall or early winter. Or what ever the coldest season for your region is.
Winter