The Irish clover officially recommended for use by farmers across the UK

The first-ever Irish red clover (Trifolium pratense) variety, named Fearga, has been bred by Teagasc at Oak Park, Carlow, as part of the Animal & Grassland Research and Innovation Programme.
Red clover is a nitrogen (N) fixating legume with the capacity to fix 150-200kg of N/ha/year.