While it is generally considered less palatable than bluegrass, tall fescue produces one of the toughest and heavy traffic sods of any adapted grass. Use endophyte-free tall fescue seed whenever establishing new fescue stands for horses. Brood mares should be removed from pastures containing endophyte infested tall fescue at least 90 days prior to foaling. Whether you improve your pastures by the use of lime and fertilizer or by reseeding, sound management is essential to keep the desired species persistent and productive. Avoid over or under grazing.
Horses are notorious spot grazers.
They will seriously damage desired species in some areas unless they are moved into new pastures frequently. Therefore, some form of rotational grazing is desirable. The correct acreage per horse changes with the season as well as with other factors. However, a good rule is to provide at least one acre of good quality pasture per horse. Then set up 5 or 6 paddocks, letting the horses graze first in one area for about one week and then change to another.