Rather, a pre-plant application of Balan or Eptam incorporated into the soil, is recommended. Bluegrass grows rapidly in early spring, while trefoil starts some time later. Therefore, be sure to graze heavily early in the season to allow the trefoil to survive. Trefoil is most productive in late spring and summer, with the bluegrass picking up again as cooler temperatures return In the fall. Thus, the mixture tends to even out pasture production over a long period of time.
Rotational grazing is the best way to manage trefoil-bluegrass pastures.
However, do not graze closer than 4 inches to prevent damage to the trefoil crowns and also to insure that there will be sufficient axillary buds for regrowth. Trefoil can be grazed often. One way of reseeding and spreading trefoil is to graze mature seed pods, allowing passage of the seeds through the animals. Birdsfoot trefoil is seldom used for hay. But if so, it should be cut when in early bloom.