Direct sow lawn seed from March to October whenever soil is moist. Mow area as short as possible before sowing. Remove any weeds or debris. Sow evenly across the area to a depth of 3mm in bare areas, or 2mm in areas that are thin. Water gently with a light sprinkler. In dry conditions, repeat watering until seeds have germinated and are well established.
Doff Glyphosate Weed Killer kills weeds right down to the root. The weedkiller breaks down in the soil, meaning treated areas can be replanted.