'Birdsfoot' refers to the manner pods attach at right angles to the peduncle giving the appearance of a 'bird's foot'.
Birdsfoot trefoil seeds are one of the most common impurities of white clover seeds as well as some commercially-available grasses.
As most plants in the pea family, birdsfoot trefoil adds nitrogen to soil and for this reason, it is useful for improving poor pasture land.
