Most permanent pasture plants are small-seeded and rather slow in becoming established. Use of these pastures during the year of seeding should be delayed until the plants are firmly rooted and growing vigorously. Turning birds into a perennial pasture too soon after seeding may result in poor stands as many plants will be killed by trampling and others will be pulled out by the grazing birds. Late fall grazing of new seedings should be avoided. It usually is necessary to mow new perennial pastures once or twice during the first year to control weeds. This mowing should be done when the weeds are flowering or before seeds develop. The cutter-bar of the mower should be set three or four inches above the ground to cut the weeds with a minimum of injury to the young forage plants.