What does a Grassland Harrow do and reasons for harrowing: A harrow is used for breaking up and smoothing out the surface of the soil. Harrowing removes unwanted dead grass and levels any mole hills. Its job is to allow air movement and root aeration which helps the soil to breathe and improves water infiltration. It reduces disease by exposing fungi and bacteria to sunlight which is essential for the health of the pasture. When do you find is the best month to harrow? Check out our range of har